clam bumped 

when a girl stops another girl from hooking up with a guy.

hey girl he's hot i'm going over to talk to him. oh shit look at that skank in my way trying to "clam bump me".

can you believe i was just "clam bumped".

clam bumped by stewy loom April 19, 2011

clam bumper

A homosexual woman. (slander)

Man: "How did I know my girlfriend would run off with a clam bumper?"

clam bumper by Spud January 27, 2004

clam bumper

lesbian

"Gee, I never would've guessed that Rosie O'Donnell was a clam bumper.", he said sarcastically.

clam bumper by Mike Stander August 1, 2003

clam bumper

Lesbian

"you two clam bumpers wanna be alone?"

clam bumper by like2watch August 1, 2003

Clam Bumpers 

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.

Clam Bumpers by leanna :) April 25, 2006

clam bumper

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

clam bumper by Cockmaster Bob January 12, 2004