When I am in a lengthy edging session, and I take a break, I always end up leaking a small amount of cum when I am not 100% hard, but my cock is still swollen. It's not allot, just a few drops or a small stream of cum on the floor.

The longest for me is 10 hours, but I have to take breaks, and even then I always drip cum on the floor a few times before I am allowed to release.