Originally Posted By: etaoin
2z2. He mad cheats at cards.

Nope. That's going too far (around here). Never heard it modifying a verb. Here are some I might with the same meaning:
1. He's a mad cheater at cards.
2. He cheats mad hard at cards.
3. He cheated mad times at cards.
and the like....

Okay, okay on "a lot". (but I do like "Big Z"; maybe I'll make it oxymoronic as "Big z". Yeah. I like that!)
;0)