Hey, Israeli here! In case some needs a better explanations of all the slang in the video, a better explanation would be- 
1) Al Hapnim (על הפנים)- Litr. On the face, as in fell flat on the face into the mud. It basically means shit or shitty. 
In context, it would use it as a way to say something is really bad [experience], for example- "the new Disney Snow White movie is shit" "הסרט החדש שלגייה של דיסני הוא על הפנים"

2) Gag (גג)- Litr. Roof. as in the celling or top of something. It basically means Maximum/ tops. 
In context, it's an indicator of the top limit of an action you can to do. For example- "It would take 15 min. for the Pizza to arrive, max 20 min." "לפיצה ייקח 15 דקות להגיע, גג 20 דקות"

3) Mah Pit'ome? (?מה פתעום)- Litr. What's [so] suddenly? as in "No way!" or "wait, really?" This is a tricky one tho, as the ACTUAL meaning of it is either to indicate surprise (*gasp*, no shit!), or more commonly, to deny a previously given information/ statement.  
In context, it can be used in one of the 2 ways- 
A- Surprise: Per. A- "did you heard the news? Jenny got the job!" "!שמעת את החדשות? ג'ני קיבלה את התפקיד"
                 Per. B- "No way! David is more qualified for it"  "מה פתעום! דויד הרבה יותר מוכשר אליו" 
B- Denial: Per. A- "You didn't bring the reports that I asked for last week" "לא הבאת את הדוחות שביקשתי בשבוע שעבר"
                  Per. B- "No way, I handed them to you yesterday!" "!מה פתעום, מסרתי לך אותם אתמול"  

4) Haval Al Hazman (חבל על הזמן)- Litr. waste of time/ sad for the time. This is another tricky one, as the ACTUAL meaning is "WORTH your time", as in the positive of something being so good, it was worth every second of it. Basically it means Worth it, awesome. 
In context, it would be used to describe a very positive experience you have. For example:
Per. A- "So how's the party? Are you having fun?" "?אז איך המסיבה? אתה נהנה"
Per. B- "Dude, it's awesome! You have to come over too" "!אחי, היא חבל על הזמן! אתה צריך להגיע גם"

5) Sof Hadereh (סוף הדרך)- Litr. end of the line/ road. as in top of the line. Very similar to "haval al Hazman", it means the best or awesome. Tho used more to indicate something of high quality, best graded/ marked thing of it's kind. It basically means top notch. 
In context, it's commonly used as a way to say that say that something is the best thing you used/ experienced. For example- 
"This steak is top notch! The best I ever tasted" "הסטייק הזה הוא סוף הדרך! הכי טוב שאי פעם טעמתי"
  
6) Lehagdil Rosh (להגדיל ראש)- Litr. Grow your head. as in expand your mind. There isn't a direct Hebrew to English translation for it, as I don't think there is a good parallel to it in everyday English slang. The closest basic meaning is to think outside the box, but it ain't exactly how it's used in Hebrew. The common use is to say someone is thinking/ doing over what's expected of them, going beyond the required task. In context, you can use it to say "Danny overthought yesterday our preparation for the vacation, and throw in an extra sunscreen just in case"
 "דני הגדיל ראש אתמול על ההכנות שלנו לחופשה, וזרק קרם הגנה נוסף לכל מקרה"  (Yeah, it's not a good example, the translations don't exactly line up). 

7) Baktana (בקטנה)- Litr. Little bit, as in just a little. This is yet another tricky one tho, as the direct translation is "no big deal" or "not much", but the meaning is basically "low- key". 
In context, it's used to indicate something that is not worth making into a big deal out of. For example- "I'm low key fan of of Rock music" "אני בקטנה מעריץ של מוזיקת רוק"

8) Dugri (דוגרי)- Litr. forthright. as in straightforward. Tho a better translation to it would be "frankly" and "to be frank". This is an Arabic word that means to be direct about something, Speaking truthfully from the heart. Basically it means to "Not beating around the bushes" or "cut the BS". 
In context, It's the Hebrew equivalent of saying "TBF" or "frankly" in English. For example- "Frankly, the party was very lame." " דוגרי, המסיבה הייתה ממש עלובה" 

9) Noo (נו)- This is a funny one, as it's technically not a word with actual translation, but more of an expression of you being impatient, or trying to get someone to hurry up. It basically a way to voice your impatience to get some reaction to happen, or push someone else to say something. think of it as the Hebrew way to convey a very impolite and impatient "...And?" "... So?" "C'mon! Hurry up!", and other expressions like that. What's even funnier is that "Noo", for the best way to put it, is a universal expression for all situations in life. It can be used for excitement, frustration, Sadness, nervousness and so on. A good way to understand it is that it's similar to "Well..?" in English, in a rather impatient way. 
There is an old joke that demonstrate the context to it:
Per. A "Say "then".  "תגיד אז" 
Per. B "So...? Then." "נו..? אז"
Per. A "No no, Say "then" without saying "So" "לא לא, תגיד אז בלי להגיד נו"
Per. B "Then......... So?" "?אז....... נו" 

10) Hai Beseret (חי בסרט)- Litr. Lives in a movie. as in "lives in Lalaland". Basically it means exactly what it sounds like- being delusional, as if someone is so out of the reality of things, oblivious to a point of living in a fantasy of their own creation (aka a movie). Very straightforward and easy to understand, TBF. In context, it used to say that someone is "delulu". For Example- "Alex is delulu if he thinks the girl he chats with on Instagram is real" "אלכס חי בסרט אם הוא חושב שהבחורה שהוא מתכתב איתה באינסטגרם אימיתית" 

Sorry for the huge long post. I hope this would help anyone understand Hebrew slang better, and have a much better understanding of the words that were talked about in the video.

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Isareli here! In the previous video I made a big explanation post on all the slang words. This is a part 2, for all people who didn't understand the words in the video  

1) Sababa (סבבה) - Litr. all right, as in Okay, everything is good. Used as a way to signal an agreement to something in a none- formal way. Basically it's the same as OK 👍 in English (the emoji is not necessary, lol). 

2) Fadiha (פאדיחה)- Litr. Faux, as in a blunder. This is used to say something embarrassing happened, typically some kind of a failure in a stupid way. It originates from the Hebrew word for Joke "bdiha" (בדיחה), in which the joke is an embarrassing blooper/ mistake that you aren't happy of. A few examples of Fadiha could be- releasing a big fart while you give a serious presentation. Trying to impress your friends with some trick, but not properly "landing" it. Coming to an important meeting with a piece of food stuck in your teeth, and so on. 

3) Achi (אחי)- Litr. My brother, as in Bro, dude. rather informal way to address other people in a friendly way. Used very similarly to the English use of Pal, Dude Or Bro, with it being accepted way to address strangers you aren't personally familiar with. Israelis tend to use it even in a professional environment, as long as the conversation isn't formal. Basically it carries the same weight as "my brother in Christ", just with less religious connotation. 

4) Motek (מותק)- Litr. Sweetie, as in Sweetheart. Typically used in a romantic relationship, as a pet name for your partner (think of it as calling your partner honey, dear or babe). That's said, in a none- romantic use it can be both seen as a flirtatious way to address a Stanger (Kinda like in saying to a stranger "Hey honey, How's going?"), or a "Karen" way to "nicely" address someone (similarly to "Darling, can you call your manager for me?") Keep in mind that Motek can be seen as catcalling too! So best keep it to your romantic partner, or a friend group that knows you don't mean to call them "honey" in a derogatory way. 

5) Balagan (בלגן)- Litr. a mess, chaos. This is NOT necessarily a negative word, as it can be used for both positive situations (Last night's party was crazy! It was soo much fun!), as in negative (Gosh, this room is such a mess! When was the last time you cleaned it?) A good way to understand it is when you try to describe a chaotic situation. It can be a signal that you "made a mess on purpose" as a way to enjoy your time (We had a craze on the dance floor), or signal a messy event/ situation/ environment you had been in (The office was in mess after a rat snuck into it). As a slang, it most likely to be used POSITIVELY as a way to express a fun time, so don't be confused by it. 

6) Chutzpah (חוצפה)- Litr. Rudness, audacity. The way English speakers had adapted & start using this word is pretty much the same as it's commonly used in Hebrew- a way to call someone's audacity and nerve to act in a situation that isn't in their favor. think of it like- "You got punished for failing the test, but still has the chutzpah (audacity) to ask for a treat?!" "Youtube increased the price for a Premium subscription, and after that had the chutzpah (nerves) to put ads in there too!!".
 In proper Hebrew this is used to say someone has a lot of nerves and attitude towards others, not necessarily in a negative way, but still in an act of defiance against the proper norms. For example: "Mary had the audacity to call out her boss, right in the middle of a conference meeting" "למארי הייתה חוצפה לקרוא טיגר על הבוס שלה, ממש באמצע מפגש מנהלים" 

7) Tahles (תכלס)- Litr. In particular terms, in reality. This is used very similarly to the English use of "honestly" and "To be fair". It signals getting to the main details of whatever the conversation is about, kinda like saying, "honestly, in short...." Commonly it's used as a way to "get to the point" in a snappy short way. Think of it as the underline of the topic in discussion, what you are trying to directly say. For example: "In short, Disney live action movies were a bad idea."  "בתכלס, סרטיי הלייב אקשן של דיסני היו רעיון גרוע" 
* And for anyone who wonders what's the difference between Doogri and Tahles- Doogri is closer to "brutally honest" about something. It used as a way to be straightforward or frank about something. ("Frankly, this red sweater doesn't suit you"  "דוגרי, הסוודר האדום הזה לא מתאים לך"). On the other hand, Tahles is used more as a way to "cut the BS", and the to whatever point you are trying to make ("Tl; Dr, you should check out the new series on Netflix. Really recommended watch" "בתכלס, אתה צריך לבדוק את הסידרה החדשה בנטפליקס. ממש מומלץ לצפייה") 

8) Keta (קטע)- Litr. a scene, a moment. Used as a way to say "a funny moment just happened", the opposite of Fadiha. If fadiha is used to describe something embarrassing or comically stupid, Keta is used to describe something that is stupidly funny or a funny accident. it can be both a funny coincidence (I just talked about you, and then you called me. What a funny thing!), or an embarrassing situation that turned into a funny one ( I thought I forgot my car keys at home, but they were actually in my bag all this time!) The situations not have to be necessarily humorous, but it is end up being somewhat of a positive experience. 

9) Arsim (ערסים). The plural form of Arse (ערס)- Litr. "bastard" or pimp. This is a derogatory way to describe someone who acts like a 'roadman' or a 'criminal'. Usually used to refer to males, but can be used to refer to females too (Sing. Arsit ערסית, plur. Arsiyot ערסיות). Very rude person who is extremely unpleasant to be around with. Often is violent, and constantly trying to appear "macho" in the eyes of others. Very petty, and can be easily offended over small insignificant stuff. A common Israeli joke states that their Girlfriends are Frechut (פרחות), Kinda suggesting that "a man from the hood would date an equally cheap woman" 

10) Frecha (פרחה)- The singular form of Frehut (פרחות)- Litr. Bimbo. A slang term used only for woman, and usually means "the GF of an Arse". This is a derogatory term used to describe a rude, often vulgar woman, who is hussy and acts like a bully. Basically a "mindless bimbo" who tries to be cool and fashionable, but ends up being a "cheap plastic girlie". A common Israeli joke states that they tend to date the Arsim, because "cheap woman would date an equally "bad boy" from the hood". 

** To explain the Arsim and Frechut joke to anyone who isn't verse in Israeli culture, it's build around the stereotype of Mizrachi Jews tend to be "uncultured and rude people". Most Arsim and Frechut in the Israeli culture are Mizrachi Jews (Typically Iraqui or Moroccan), as they are believed to be very loud, vulgar and rude people, who also often bully anyone who they don't like. And as follows, Mizrachi man are seen as "Arsim", aka "toy gangsters", due to their "criminal like" behavior. Their girlfriends tend to be equally rude and unladylike, while trying to be "trendy with the latest fashion & cultural trends" (aka a bimbo or Frecha). So the joke is that "a toy gangster dates a bimbo", similarly to the American stereotype of "jocks dating the hot cheerleaders", but taken out to a whole slice of the Israeli society. 

Hope this list helps! Not a lot of things to explain this time in a English-to- Hebrew translation, but a lot of this stuff are build around cultural norms that one should remember when learning common Hebrew slang.