Oh ok ...I thought felching was when two gay guys did this thing where one would stick a paper towel roll or a tube up the other guy's ass and then they put a hamster or gerbil or rat in the tube and then light a match at the end of the tube so the the rat/gerbil/mouse crawls up the guys ass and starts clawing the inside of his ass and shit...

I guess that's called gerbil jamming or something....