Top definition
Man: "How did I know my girlfriend would run off with a clam bumper?"
by Spud January 27, 2004
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The Urban Dictionary Mug

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2
"Gee, I never would've guessed that Rosie O'Donnell was a clam bumper.", he said sarcastically.
by Mike Stander August 01, 2003
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The Urban Dictionary Mug

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3
"you two clam bumpers wanna be alone?"
by like2watch August 01, 2003
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The Urban Dictionary T-Shirt

Soft and offensive. Just like you.

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4
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.
by leanna :) April 07, 2006
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Dirty Sanchez Plush

It does not matter how you do it. It's a Fecal Mustache.

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5
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
by Cockmaster Bob January 12, 2004
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Cleveland Steamer Plush

The vengeful act of crapping on a lover's chest while they sleep.

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