like really? how often does that sort of thing happen?
Most Helpful Guy
Guys, especially teenage guys can get kind of excited about even small levels of physical contact from a girl. it is not an intentional or even a conscious response. I remember many embarrassing high school dances when I tried to scoot my hips away from a girl during a slow song so she wouldn't know I was getting an erection--tent dancing rather than full body slow dancing.
After a guy gets more used to the physical contact he becomes a bit more desensitized and won't automatically react that way as much unless the contact is prolonged or involves a little extra. Although getting an erection can still be somewhat unpredictable.
So sometimes a guy might get erect from a long close hug, but sometimes from nothing at all, especially in the teens and early 20s.2