what u doin 

Idiot expression used by those with low intellectual capacity. An alternative to asking "What are you doing". Not to be confused with WHATTAYADOIN or WHAT THE HELL ARE YOU DOING?!?!

Via AIM...

Teabag934: What u doin?
Dough 1583: Entering stage 4 of robotic development mode.

what u doin by Steven Muntner *see RAT-MAN March 7, 2005

what r u doin step brendini

brandy wandy

Yummy Cum!

what r u doin step brendini in my ASSHOLE ?!?!?!?

what r u doin step brendini by that.Kid.Who.Likes.Girls July 12, 2020

what are u doing step bro 

what are u doing step bro is something that a step sister says when she gets stuck in a provocative position and her STEP-BRO walks in with his big Ding Dong Shling Shlong and sticks it in his step sister and the iconic line is said WHAT ARE YOU DOING STEP BRO

Stepsis: oh no im stuck in the washing machine
Stepbro: Walks in with dick out and sticks it in his step sister
Stepsis: what are u doing step bro, did u at least use a condom?
Stepbro: Its fine were not related by blood so there's no chance of deformity

what are u doing step bro by Big ol Horse Ding Dong February 21, 2022