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1 definition by Tre Bay Locc Dogg

A blumpkin is when a guy is sitting on the toilet taking a shit while simultaneously receiving dome from a girl
Kyle-"Yoo ryan how was last night with sarah?"

Ryan-"So dope, before i knew she was giving me dome when i was shitting!!!"

Kyle-"you mean like a blumpkin?"

by Tre Bay Locc Dogg September 18, 2009