A random loose pubic hair that falls from inside a man’s pants while he is shaking his snake and lands every so softly at the rim of the urinal.
Tim got done taking a piss and left a nice long urinal lock in the stall. He didn’t even have the decency to knock the lock off the bowl.
The act of taking your cock and slapping it across the face of a passed out woman.
Mark saw the drunken girl passed out on the couch and said "I'm a gonna hit her with a silent slapper!!!"