Male greeting. Used most often among a group in a chat room. Depending on the answer, the person will be judged to be "in" or "out". This is normally followed by an extended boasting session. However, the boasting is reversed and as a person is accepted into the group, a tall tale is told about them.
Cyborg walks into a room and says "Hey everyone"
Nova responds with "Hey Bro"
Cyborg say "Do you even lift bro?"
Adabear says "I lifted your mom last night, does that count?"
**Now accepted as part of the group**
Cyborg says "Adabear is so big he once lifted the ocean, just cause he dropped his sunglasses while Jetskiing!"

After appropriate laughter, this continues as a greting
by Adabear September 02, 2013
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steve: i do ur mom last night
bill: i do ur bros last night
by soulkiller6797 March 11, 2019
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The question you ask when your step bro walks into your room with his big schlong dong out and about. Expect "Sweet Home Alabama," to start playing in the next few seconds.
Step Sis: *in a loli voice* What are you doing step bro? *bites her lip as she tugs on her skirt*

FBI Agent: Okay I have seen enough
by rottenkid May 09, 2019
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What you ask when your step bro is doing something he’s not supposed to.
Step Sis: “HELP! I’M STUCK”
Step Bro walks in.
Step Sis feels something.
Step Sis: “What Are You Doing Step Bro?”
by DaddyMints July 21, 2020
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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 26, 2019
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