Dare! ;)
Do a bad impression of the person who asked you the dare.
Jack laughs and slaps his thigh.
“Oh, this’ll be good!”
He turns around and takes a dramatic breath, like an actor composing himself before a scene, and drags the steepled fingers of one hand down the air in front of himself in a zen-like fashion. He was most definitely going to get slapped for this, so why not make it count, right?
He turns again, glowering menacingly with a raised eyebrow and pretending to lift a cowboy hat out of his eyes with a finger. He can’t keep the grin off his masked face as he points his ‘guns’ around and ‘shoots’ the invisible bandits around him, making pew-pew noises as he does so. He does a full circle before blowing the ‘smoke’ from his finger pistols and makes like he’s spinning them around before miming them into holsters like an old-fashion movie cowboy.
He starts to wrap his arm in a bow—
“Oh, wait! I almost forgot.”
He winds it back and jerks it forward hard, imitating a whip crack sound and yelping, and then mimes something incorrigible with his fingers, making more juvenile screaming sounds and raspberries. When he’s done bouncing around like a child he rolls his hand and resumes his dip, thanking the non-existent crowd. There aren’t any roses, but the floor is probably going to have a lot of red on it in a second anyway. Worth it.