This is what I think of every time someone describes something as "cray":
Now stop it. You sound like an illiterate jackass, "crazy" is not a word that needs to be shortened.
(Unless you are talking actually talking about our friendly freshwater-dwelling crayfish. In which case, carry on. I'm sure they appreciate the attention and not being confused for their evil saltwater doppelganger, the lobsters. ...Seriously. Lobsters are cannibalistic and their diet consists of eating things alive, whereas crayfish do all of the not-that.
*The More You Know***)