Hmm, I thought. That's interesting. And we moved on.
Then I stopped. I turned around, walked back to the toy display and looked again:
Now, I'm going to surprise you. After some thought, I felt less "this is freaking wrong" and more amusement. Even sympathy. Because you just know this idea originated with some poor middle-management guy in Saigon or Japan who has no idea who the Joker is. He probably saw something like...
Ah. The poor guy.
(Incidentally, have you ever read the Wikipedia article on the Joker? It's fascinating.)
Actually, I saw something much creepier at the Bulls-eye Barn - a label on some organic baby food: