>>8520364getting raging hard-ons every time a girl you are remotely interested talks to you.
waking up with your underwear full of jizz in the middle of the night
occasionally feeling that you are going to burst out a massive load, even without being turned on (I was in the pool showers once and I was sure I was going to explode, for no fucking reason at all)
slightly more energy, slightly more focus if you can keep your mind off the tits of the girl across the room.
Also, once you eventually do cum, your cum will look like there's something seriously wrong.