Brother from another mother

When your dad leaves your mam and fucks someone else and your mam finds out so your stepbrother has to come over every once a week

Stepbrother: Oh I love you brother
Other stepbrother: we ain't brothers you stupid fucking asshole of a stepbrother, you are my brother from another mother!

by Jay McEv November 16, 2019

brother from another mother

boy that is your "brother" but has a different mother

boy says to girl- you stink
girl then says back to brother- get away from me you brutha from anotha mutha

by elle February 4, 2005

brother from another mother

A brother in law. Does not apply to a sister in law.

Bob and Sharon were married. Timmy is Sharon's brother. Timmy is Bob's brother from another mother.

by Piefayth July 8, 2006