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2.
When multiple men have had sex with the same woman.
Damn Tommy Mac, you banged her too? I guess that makes us cock in laws cause I tore that pussy up!!
by Quindlen Rules July 08, 2011

Words related to cock in-laws

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1.
When two guys have sex with the same person they become cock in-laws.
You had sex with Tina too! I guess that makes us cock in-laws! Welcome to the family!
by bagineria January 08, 2007