Do you hear that? the metronome is your new mistress. If you fail to follow it, I 'll call Britney. If you cum, you have to go and of course you can't fuck britney even if you want she is gonna freak out!
(get an online metronome)
pace: 100 per min duration :2 minutes
pace: 140 per min duration 2 minutes
pace 100 per min duration 3 minutes
pace 140 per min duration 3 minutes
whenever you feel you have to stop, you can stop. Of course it will cost you.
first stop : 2 clothespins on the nipples
second stop : tie your balls with the rope
third stop : drink one liter of water
If you have to stop a fourth time you have to tie an empty bottle to your balls. From now on, if you want to pee, you have to do it in the bottle. So don't pee to much!!!
Go back to britney she is waiting for you.