A homosexual woman. (slander)
Man: "How did I know my girlfriend would run off with a clam bumper?"
dari Spud Selasa, 27 Januari 2004
4 more definitions
"Gee, I never would've guessed that Rosie O'Donnell was a clam bumper.", he said sarcastically.
dari Mike Stander Jum'at, 01 Agustus 2003
"you two clam bumpers wanna be alone?"
dari like2watch Jum'at, 01 Agustus 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.
dari leanna :) Jum'at, 07 April 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
dari Cockmaster Bob Senin, 12 Januari 2004