Bite the towel, I'm going in dry.

When someone says this, it means that they are warning you to bite onto a towel, because they are going to pound into one your holes, with no lube. They don't want you to be loud and start screaming because of their enormous cock.

Last night, Chris said "Bite the towel, I'm going in dry." I didn't know what he meant though..I was screaming so loud. I wish I had bitten the towel.