- a bond made by 2 or more bros , obtained by frenching with the same girl and thus trading each other's spit
' damn u hooked up w Sarah? bro I made out w her in the 9th grade, we're spit brothers now
by mushypoos February 10, 2018
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When two guys spit on each others hand and then give a handshake.
Samuel is my spit brother. But my hand smelled gross after doing that.
by di36ok3w1 November 7, 2008
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A day you spit on your brother 🥰 ITS ON THEIR BIRTHDAY!!
Brother: it’s my birthday!!
You: happy birthday! Hey guess what

Brother: what?

You: *spit on him*

brother: WTF

You: ITS SPIT ON YOUR BROTHER DAYY!!
by Stan P1Harmony ☝️😁 April 5, 2021
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