I figured I'd be nice and try and help you with your 'little' problem. You know, the problem being that you can barely last 30 seconds fucking your fist? Yeah, so I've come up with a way to train you to last a bit longer. Y'know, as a favor to every lady who fucks you. I'm going to tease you, barely showing off anything at all, and instruct you on how to tease your cock so you don't cum until I want you to. Let's see if you actually manage to not cum.