a mfer who gets a boner no matter what his step sister does and does not understand consent.
My step bro got a bone as I was washing the dishes
by insatiable 2128 April 02, 2021
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Were the step sis and step bro have sexual intercourse not like alabama
by Fususuchdh October 28, 2019
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a brother that is not your actual brother.
Looks like she is stuck *sniffs air aggressively*
Step-bro! Im stuck
by Racoon14 March 20, 2021
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Step-bro is a spreading disease / mental illnesses that is commonly found on the child app "Pornhub" and steps sisters and steps moms are usually the victims of this deadly disease.
"Step-bro I'm stuck!"

"And that's how I met your mom"
by deleted user July 12, 2021
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If u say that someone is your stepbrother it means you have a crush on them
Hey Jessica I think alex might be my step bro
by My dad is my dad September 30, 2020
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The day the step bro gets all the fun and enjoyment from his step sis, this day is on the 14th March and the step bro should get all he wants on this day

Step bro : hey step sis I want you to fuck me

Step sis : ew now

Step bro: tomo is the 14th March
Step sis: FUUUCK
Step bro day :
Step bro : hey step sis I want you to fuck me

Step sis : ew now

Step bro: tomo is the 14th March
Step sis: FUUUCK
by RealNigaFucka March 08, 2020
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