I just love my new cock pump. It' such a fantastic CBT device. I have Bart bound in my sling and after stroking his cock for a minute, it's time to apply the cock pump. It's amazing how much red stuff is pumped into his cock using this device and I think it will be even more fun if I beat his balls with my slapper. Watching him struggle to take the pain/pleasure is hilarious, yet arousing at the same time.