used for when your step bro stands in the middle of your room with his phone and his dick out.
what are you doing step bro? get out of my room!“

“uh, i was just trying to find the toilet..“
by minecraftgal October 28, 2019
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Here goes.

Today im going to be acting out my favorite movie scene.

*turns around*
what are you doing step bro?!?

(starts the porno)
girl: What are you doing step bro?!?!
step bro: really?
by oooyeetskrrr March 27, 2019
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The thing you hear your step sis say when she’s stuck in the washer. Expect to hear SWEET HOME ALABAMBA! in the next few seconds then your virginity will be gone forever. Also expect to be on p0rnhub and other p0rn apps
your FBI agent seen enough when he heard WHAT ARE YOU DOING STEP BRO!?
by THErealCOOCIEman March 1, 2021
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The use or photosynthesis in the male human body to measure the amounts of testosterone in the air then times by x and then you get the declaration of independence and use flex tape and he will give you the answer of x₩¥●♡• 20÷*)*
donald trump is trapped in the basement JOE BIDEN YELLS "WHAT ARE YOU DOING STEP BRO?"
by Step Dog November 17, 2020
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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
by Big ol Horse Ding Dong February 21, 2022
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the reason for the termination of photosynthesis is to measure the amount of testosterone in the air then times x by the power of flex tape and he will give you the answer of 30#*₩£?♧~《¿
Donald trump is trapped in the basement JOE BIDEN YELLS WHAT ARE YOU DOING STEP BRO?
by Step Dog November 17, 2020
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