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1.
A sucking burp. Specifically when you suck air in as a burp comes out. Offen occuring after drinking beer or soda.
"Dang girl, that was one hell of a surp! Did it hurt?"
by Ryft December 03, 2011
 
2.
to drank, sip, sizzurp, or slurp; used as a noun or a verb
"Yo lemme get a surp a dat"
by AAAAAAnonymous October 06, 2009
 
3.
1. cool, awesome.

2. as flexible as "fuck".

Originated as "syrup". Our friend Josh asked how we liked Superbad and we said "its syrup". Syrup meant cool or awesome. The word changed in a conversation with Evan because Surp just rolls off your tounge.
1. "That band is wicked surp."

2. "Holy surp! That surping surpbag surped my sister's surp into two surping surps!"
by Meredithhhhhhhhh July 31, 2008