… to rid the Web of the overused, outdated, lazy-crutch of an insult: “… on crack.”
As in “He runs like Jesse Owens on crack!” Or the more pejorative “Are you on crack?” That’s sometimes cleverly disguised as “You must be on crack” or “Put down the crack pipe.”
I know I’m turning into an old fart before I’m 40, but I happen to be right about this. Right?
Mostly Modern Media 
You’re absolutely right! (I’m glad I’m not the only Georgian who thinks so.)
You must be on crack
“People say ya look like M.C. Hammer on crack, Humpty.”
My first exposure to the phrase, and probably the best. Maybe it should’ve ended then.