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To ejaculate on the body of a female.

Usually said in a silly voice that is a cross between Adam Sandler and Bill Cosby.

Created when 2 cool guys watched an episode of SNL that had Adam Sandler spoofing the Cosby Mysterys. They mimmicked him using the word jizm then had sex with women and the word jizmflop was born.

Girl: Hey you did it in my hair!
Man: Aaaaw Jizmflop : (
by Niv February 16, 2006
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