You probably don't want to know...but it's when two guys connect eachothers asses with a tube and shit in it and slide it back and forth into each others asses.
Sov... he is talking about that one thread you edited my link in about the fat girl and the milkshake song... then zeal posted something disturbing about this one guy that tortured his 4-5 year old. Then after that I saw it wither away as no one else posted in it. Your memory sucks...