Top Definition
Considered to be a holy term to reveal the truth from your cousin.

Over time the use of cousinship has developed into other 'ships', such as 'siblingship' and 'friendship' to name a few.
Cam - Bro i fucked cindy!!
Mitch - aye mean, cousinship??
Cam - nah i had a beat instead
by cousinship bro October 18, 2010
term used typically by inebriated individuals referring to

the relationship/special bond with ones cousin.
Bub: Wow Dave, I cant believe your going to fuck up our cousinship over this dumb shit!

Dave: "speechless"

Matt: Come on Dave let's just go DP Carly..
by poobub February 21, 2010
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