Kramer is a pot dealer
After watching Seinfeld for years I have come to the realization that Kramer is a huge pot head and pot dealer.
Think about it...
-He has no job the money has to be coming from somewhere???
-Kramer knows just about everybody
-He's always eating all of Jerry's food (munchies)
-He'll leave Jerry's place for no apparent reason and he will make up some bullshit excuse.
He is certainly a stoner; with all his crazy escapades