:shamihuh:
It was a Batman The Animated Series reference. The episode " Almost got im" where the villain gallery are having a poker night, recounting their convoluted plans of how they almost killed Batman. Then Killer Croc butts in with his story "I THREW A ROCK AT HIM!" Everyone rolls their...
Bigoted. It's kind of a catchall for discriminating on someone based on any particular trait. Usually having to do with race but not specifically. Although in this case since they don't even think he's hyuman, racist still works.