proper noun, verb, Sheened, Sheening
1. the actor whose erratic behavior may have cost him his lucrative job as a sitcom lead
2. the perfectly legal, yet dangerous substance that said actor claims to use recreationally, e.g., "I'm on a drug. It's called Charlie Sheen. It's not available. If you try it once, you will die"
3. the act of behaving in a manner akin to this actor, as in Trey Parker and Matt Stone telling David Letterman that they were "Sheening pretty hard" when they cross-dressed at the Oscars
The Charlie Sheen Glossary - ‘Winning,’ Warlocks, and More -- Vulture'