Quote Originally Posted by eidjit View Post
I'ts mostly refered to the head rather than the hair or wig on it.
And in this particular sense it means the shape of the Mate fruit that resembles a human head :

There's a Spanish(Argentine) article about it:
Quote Originally Posted by francot View Post
This is getting quite extreme, if you ask me. So, "Me voló el gato"? Interesting, to say the least.
Talking of extremes, that article is definitely off the charts!!