A glistening residue of spunk or semen which collects on the top lip of an adventurous
individual post
fellatio. It is not unusual for the residue to run down the sides of the mouth thus forming a striking resemblence to a glistening handlebar moustache. The word is more commonly used today to refer to the milky residue left after consuming a foamy or creamy drink like a cappucino of
milkshake.