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1.
The sound one makes when in utter contentment, and amusement.
Person 1: What do you call a sheep with no legs?
Person 2: I don't know, what?
Person 1: A cloud!
Person 2: Thwipthwipthwipthwipthwipthwip
by thwipthwipthwipthwip May 17, 2010
 
2.
A word to describe the sound of a web shooter firing webbing.This came from Spider-man!!!
Thwip! here comes Spidey!!!
by Steve Glorioso April 17, 2004
 
3.
An onomatopoeia for the sound Spider-man's web shooters make when expelling webbing. Invented and Trademarked by Marvel Comics.
Spider-man's webbing struck the wall..."Thwip"; as he swung from building to building.
by Thwip February 08, 2008
 
4.
Word not able to be said without sounding homosexual.
Tom: "omfg d00d ur such a thwip!"

Sam: "are you comming on to me?!"
by Tommy October 26, 2004