Kentucky Longrifle

The act of one man defecating into another man's urethral tract, and pushing the feces further in by shoving his penis inside of the other man's penis, in an act similar to using a ram rod to push the musket ball down the barrel of a musket, hence the name

John: "Dude, Sebastian gave me a Kentucky Longrifle last night and now my piss is brown."
Mark: "Holy fuck dude that's nasty."