Is it normal to get an erection from frustration?
When I'm doing something tedious or aggravating like threading a needle, hammering in a bunch of nails that keep bending, or trying to beat a difficult level in a video game, I'll usually start to get a boner. If it's going for a long period of time, it gets to a point where I'm too hard to focus on whatever it is I'm doing and I feel like I HAVE to jerk off right then and there.
The thing is, I hate being frustrated, so I don't think it's a kink. I don't know, anyone experience this?