Little Devil
Hold that edge until I tell you otherwise.
This is a straight-forward endurance test. Cum and you will be dismissed. Resist and you may continue.
Look at your clock. Make a note of the time. Add 5 minutes to it. When the clock reaches that time, you may continue. Unless you have cum by then of course, in which case your sorry ass will already be on the street!
Stroke. Keep stroking. Stay on the edge. If you get close to cumming, pinch one of your balls between thumb and forefinger as before until the feeling subsides. Then stroke again, edge again, and hold it there...
If you have to stop again, pinch both balls until the feeling subsides. Then stroke again, edge again, and hold it there...
Good... very good! Keep it right there: on the very edge of exploding. You should be one light stroke away from cumming at ALL TIMES...
Do you think I'm gonna let you spurt? Well do you? Make your mind up whilst holding that edge...
If you have to stop AGAIN at any point, pinch both balls until the feeling subsides. Then punch yourself once in each ball for good measure. Then stroke again, edge again, and hold it there...
If you manage to make it through 5 minutes, you may