Clam jumper 

A manwhore. Guy that jumps from clam to clam.

Did you guys hear about Dave? He slept with Amber, Jenny and Jennifer, he's such a clam jumper.

Clam jumper by khigga June 12, 2013

Clam Jumper 

A guy who sleeps with all his female friends...male equivalent of a "homie hopper"

Dude, your such a clam jumper! You've slept with almost every girl we know!

Clam Jumper by Alice326 May 19, 2014

clam jumper 

Similar to "cock blocking". When a female prevents another female from making a male connection.

Lisa was about to get some sexy horizontal action until that clam jumper Betty showed up.

clam jumper by micklette July 4, 2011

clamjumper 

one who has sex with many different women in a short amount of time.

Adam is such a clamjumper, he already boned every girl on the dance team.

clamjumper by Adam Hay January 7, 2009

claimjumpers 

As with other urban area restaurants, always make plural the name, whether it requires pluralization or not.

"Where we go for lunch today?"
"Let's go to Claimjumpers!"

claimjumpers by Anonymous July 15, 2003