Simple answer to the question posed above. Fucking. Never. It's a dick dude. Not tits. No one wants to see your dick. Certainly no one who hasn't seen it before. Amateurs. And if it's not a hog, leave it in your pants and just hope if she ever does see it that she's a lady about it and doesn't tell all of her friends.
Funny article written by GQ's new sex columnist. Worth your time.