to bite a fart bubble (fart under water), especially your own
When I take a bath, I like to get tweaked and gwelch until the water gets cold.
by therealYaweh January 5, 2009
The act of which requires two men, a tube, and a trained gerbil. Basically a combo of felching and gerbiling. One man ejaculates into the rear end of one man while the other does the same to guy #1. Then a tube is inserted into the anus of both men, and a gerbil goes into one of their buttholes, sucks the cum out of their butthole, crawls to the other man's butthole and places his own sperm into his butthole, the action is repeated.
"Yeah me and my boyfriend tried gwelching the other day."
"How was it?"
"Kind of itchy."
by King Kawndum February 28, 2010
An act of sexual expression during which the man enters the woman from her eye socket.
Ewwww! I just saw Mr. Macintosh gwelching teacher in the art supply closet!
by brainbutter February 17, 2010