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1. Any person that you just meet who attempts to befriend you immediately or to infiltrate an already established group of friends by trying desparately to fit in.

A common tactic of this individual is to over-self disclose about extremely personal things in order to "gain your trust" immediately.

Also known as "instafriend-just add beer."
"That guy Jason that Mo invited last night was such a level jumper; he told us me his dad died last week and then asked for my phone number in case he 'needed someone to talk to.'"
by Hank Renfrow August 09, 2006
6 3
Someone who assumes they're your best friend after only meeting you a few times.
Chris is such a Level Jumper because he asked to borrow some money for some goose from Rahul after only meeting him once.
by PBizzel December 12, 2005
5 2