In addition to everything else, Charlie Sheen has now also found the time to coin a catchphrase: WINNING!
One of the principal reasons for a catchphrase’s success is that it essentially be prefab comedy. A can’t lose word or phrase that gets a laugh, however slight.
And if that phrase or word is cathartic to utter – that is, a little nervous energy leaves your body when you say it, you got a winner!
WINNING! qualifies on both those criteria.
Hence, it is WINNING!