Neil speaks quietly, and Richards thinks only to continue. He holds up two fingers. "Deep throating. You've had oral explained to you, but if you really want your person to lose all of their nice control, that's the way to go."

He follows with a detailed description of just how to relax the throat muscles and breathe through your nose enough to keep up something like that--as well as a series of warning on the damage that can occur if the technique is mishandled.