I stroke my cock to porn for 2 to 3 hours on a regular basis. It's weird, I know what you guys are talking about regarding unloading all over the place after a long run but sometimes I'll jerk for 3 hours and I think I'll actually be too tired to unload like that. I also found that if I drink a lot of water on a consistent basis, it increases my load. A lot of times I'll stroke like that in my office for 2 hours and then head home to my wife. We'll screw for another hour or so and then she gets a huge mouthful.