A homosexual woman. (slander)
Man: "How did I know my girlfriend would run off with a clam bumper?"
dodane przez Spud styczeń 27, 2004
4 more definitions
"Gee, I never would've guessed that Rosie O'Donnell was a clam bumper.", he said sarcastically.
dodane przez Mike Stander sierpień 01, 2003
"you two clam bumpers wanna be alone?"
dodane przez like2watch sierpień 01, 2003
One definition of lesbians, (clam meaning vagina) insisting that the two women have sex by rubbing one of their vaginas against the others vagina.
Cindy and Martha love eachother, they are probably clam bumpers.
dodane przez leanna :) kwiecień 07, 2006
Cassie Balleza from chowchilla that is really RANK. she smells like cottage cheese!!!!! shes a fat stupid bitch and often fucks sara merical, also a clam bumper who smokes oregano and thinks its bud!
Sarah and cassie fuck when they are together
dodane przez Cockmaster Bob styczeń 12, 2004