the act of inserting a tube into the urethra, then allowing hot sauce to flow down the tube, before ejaculating and consuming the mixture of semen and hot sauce.
When a man shoves his dick down a chicks throat, and right at the point of deepest penetration, busts. This in effect causes the chick to vomit up the dick (note, the chick does not simply vomit, she specifically vomits the dick out of her throat) causing the most splendid sensation for the man.
Jackson: Yo man did you have fun last night with that one bitch?
Guilhem: Yee son she gulched my dick so hard i still have gulch juice up in my pubes.
Jackson: Niiiiiice, gulching feels fucking bomb!
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 boyfriendtried gwelching the other day."
"How was it?"
"Kind of itchy."