If someone came out of nowhere slapped you, did the gangnam style dance, then leave what would you?

beat the shit of them .

I would praise them on their ランダム attitude. Gotta go now I am so gonna do that

Knock him out

Buy a milkshake,ask it what their non fave color is,pour the milkshake on it,follow it ホーム then when it leaves again paint there whole house the color that it hates then egg it's house.

I hope they slapped my tushie! lol (I may slappy back!)
I HOPE it was my bf!!

I would probably just stare in surprise and wonder- stand there-looking dumb & dumbstruck. ^0^

I would follow them and stun them. After that I will leave them naked and tied up to a pole.

Destroy the world. Then blame it on that person.

Hang them upside down and make them bleed to death 次 to me while I watch Supernatural. Maybe パンチ them a few times.

-stare at them walking away,holding cheek that got slapped- Again?? 0-0

I know what i'm about to do right now :3
Thanks for the idea.