He probably wouldn't have believed her. He wasn't exactly certain he believed what he was seeing now. No, wait, he just didn't want to.
And now it was coming at him and Colin backed into the door and couldn't go any further. It's hand (since when did snakes have hands?) was over his mouth and it was hissing at him and-
His brain just overloaded. Shut down, refused to deal with the big scary snake that was now way too close. His eyes rolled back into his head and he crumpled to the floor.