I feel like there is a simple answer to this simple question, a purely biological one I think, as well as psychological. I know this is simple because I believe we've all been here. What is it when you stop masturbating and you do so for some time. For some, the absence comes and hits someone at different times, depending on who they are and how long they've been doing it. You go without fapping for some time and you're doing pretty good, when all of a sudden there is this terrible tension. Your genitals are tightening and tingling, and the pressure is mounting. This feels like a purely physical sensation. You feel like the only way to solve this problem is just to fap and release the juices. I wonder if it is like some sort of withdrawal symptoms when it comes to this sort of thing.