I'm sure there are many deaf strokers out there. I think this is a perfect opportunity for the porn world to get positive PR. JM Productions could be a trailblazer for this idea.

Imagine a GagFactor and being able to read the words these whores utter. "Glub, glub, glub. Wack, cough heeze." "mmmmmmmmmm" "oooh ooh oh oh oh oh oh oh oh oh"

Or perhaps you could put a little image of a person SIGNING the action and the dialouge in the lower corner of the movie. I wonder what THE SIGN of being gagged by a cock is? (head upside down maybe?)