Kris, when you wake up after drinking, do you feel the urge to pee more than normal? That's usually a sure-fire trigger for me. If I wake up and have drain the water main somethin' fierce, ol' boy is usually at attention. The biological reason is that it helps to stop the flow.
As for being a male teenager, I had a 4 year boner that was borderline debilitating! It's funny now, but at the time, it was rather horrifying. There is no f'ing way I could have (publicly) wrestled/sparred with a girl! It was hard enough (har har!) trying to get from class to class! Fortunately, it started winding down around the time I started playing music on stage.
lol, now I have "that" Dangerous Toys song stuck in my head...
@ Leo: I think I first noticed the opposite sex at around 6 or 7 (first grade I think?). I had this weird crush on a girl and I didn't know HOW to have a crush! I had no idea what was going on. By the time I was old enough to even understand anything like that, I hadn't thought about her in a quite some time and it never re... happened? It's funny mentioning it, because I actually saw her at the grocery store YESTERDAY. Oh well, I found out some years after school that she was a lesbian.