A chick with a cock canyon is a chick that has had a lot of sex with persons or herself leading her vagina to be a canyon for cocks.
James:Yo Ron. Guess what...Ana...Oh my god! Her cock canyon is so freakin loose! She was so wet too! It was like my dick had a swimming pool!
Rondel:Really? Damn. I think I'm gonna take a swim at Ana's if you know what I mean...
