Yes and lol @ "(guys only)"

lol, This is normal and happens around the early stages of puberty. Just fold it up under the elastic of your boxers lol... not much else you can do there mate, apart from sticking it in a drawer or something haha.

I remember when I was going through the same thing, I must had been about 13 or something and my dad had took me and my sister swimming. I was in the pool and randomly got a hard on and my dad wanted to teach me how to dive. Obviously I was in there trying to stall saying no, later etc, but he wouldn't have it. So I got out and stood up with a hard on in wet swimming shorts... my dad realised and soon dropped the idea of teaching me to dive LOL. funny times

I just ussually semi tuck it into my waistline of my pants.