I personally think that wearing crocs makes you look like dumbass, even if you believe you are a supercool, egomaniac, uber kiter!!!
As far as crocs attacking people, I've not heard of any incidence of that happenning, but I have it under good authority that they start to stink like sh#t after prolonged wear!!!
Bottom line: Don't do it dude. Even if you over weight, wagon driving mates reckons it's all the rage!!!