Ain't bein' a guy grand sometimes??

I think WallyLlama's suggestion is a good one. And maybe make sure Jr. is pointing up or down might help.

But thetease is right as well. This is natural and nothing really to be embarrassed about. I have pointed out to several of the females on here that it doesn't even necessarily mean the guy is thinking about sex. Tight jeans, a stray breeze, or just because it's a day ending in "y"...lol. Don't look at this as a bad thing, just a sign that everything is in working order.

well as a girl, sometimes we don't exactly like the feeling of walking around practically dripping wet and depending on what clothes we're wearing, depends on whether or not you can see the wetness.

but i still hold to the theory that even if people make fun of you for it, as long as you don't let it bother you or act like it doesn't bother you, people will eventually leave you alone.

Tease is right... although as a guy, I can recall that it didn't exactly make a guy's day if people noticed he had a hard-on poking out after dancing with his gal. The giggles among her girl friends didn't feel exactly like a compliment.

I don't know if that's the sort of thing you're talking about... but if so some "snug" underwear or a jock strap might help. It won't keep you from getting hard, but it will keep you from looking like the big top.

You need to learn that hormones are a natural process.  There is absolutely nothing to be embarassed about.
So your gf turns you on.  I would (and so would most other people) consider that to be a good thing.

As long as you're not humping her leg in front of everyone at every change you get or something I see no problem.

My guy turns me on.  Sometimes all it takes is for him to look at me and I can instantly become putty in his eyes. But I know that there is a time and place for everything and I just can't jump him and f*** him in front of everyone (although the thought has crossed my mind a few times. lol)

Again, hormones are natural.  As long as you're not letting them take you completely over (like jumping her and f***ing her in front of everyone), there's nothing to be embarassed about.