1. Watching Blue Film (P o r n)
When Guys Watch Porrn they tend to beat off their Joy Stick aka Mastur-bate if you watch it too much you tend to beat off too much, like explained in number 2 sooner or later you become habituated to that sensation and find it more difficult to sustain an erection.
You see human beings are not actually supposed to beat off themselves. I mean why else was the Veejay put on a womans body?
