Someone who has to pull his stepsister out a washing machine
STEPSISTER STOP GETTING STUCK IN WASHING MACHINES! stepbrother screams
by Iwillkillmyselfwithpeanuts September 10, 2020
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To rub your scrotum on something, as seen by the scene in the movie "Stepbrothers" starring Will Ferrell and John C. Reily, where Will Ferrell's character rubs his ballsack on John's drumset.

Simaliar to teabagging.
I just STEPBROTHERED your face.

Pfft. Only noobs stepbrother after a double kill.

I just was caught Stepbrothering.
by Ol' Betsey April 21, 2009
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when one man fingers a chick that another man has had sex with, then the two men are eskimo stepbrothers. similar to eskimo brothers
Rick fingered a chick last night and later found out that his friend James had banged her a month ago. Rick and James are now eskimo stepbrothers.
by skirtripperclubprez September 5, 2011
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Similar to Eskimo Brothers, when 2 dudes fuck the same girl, but she is black.
Yo, me and Nick just became Eskimo Stepbrothers!

That's kinda cool, but still pretty fucking gross man.
by Mr. Bootylicious June 26, 2016
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My stepbrother is a good person.
by Sonyc September 22, 2023
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