Came up with it while playing Battlefield 1942. This is a person who changes to the team with the most/all of the captured flags points rather than helping his own team take them back.
by -WOODY- August 17, 2003

A women of the looser variety who's inclined to keep company with many different men in the armed forces. Especially Marines.
Person 1: "There's Meg. Wasn't she with a Navy guy last week? She must have a thing for guys in uniform"
Person 2: "Yeah she's a Joe Jumper. She's dating a Marine now."
Person 1: "Yeah those Joe Jumpers sure do love seamen."
Person 2: "Yeah she's a Joe Jumper. She's dating a Marine now."
Person 1: "Yeah those Joe Jumpers sure do love seamen."
by restone 2380 July 18, 2010

by PITON February 12, 2024

by mean green meme making machine October 13, 2018

a person who jumps on to the bandwagon, purely because it's popular and attempts to show another person this hype, when in fact that person is well aware of it, before the hype.
"yo, have you seen those 'yo momma' jokes? they are sick man! I know so many right now..."
"you are such a hype jumper."
"you are such a hype jumper."
by KidMP August 26, 2012

by weirdy beardy September 2, 2009

by RamRamseRamseys January 26, 2018
