No.. Not even once. Check your facts if you're going to act like you're the last word on what's canon.

Look, I don’t want to come off as angry, but we are just a little fanmade blog! I THINK he used it once, from what I remember. That, or I was high or something while reading the comic haha. And we are no way the last word for the comic! We mostly take submissions, anyway. And don’t expect me to know EVERYTHING! This webcomic is HUGE. And many things get lost in with everything else, in my head. :)