79 minutes in the movie, Giovanni Ribisi removes his shirt and drops his pants. At first, he turns around and we only see his butt.
But then he waves at a friend, and we get a good view at his dick too!

Paul Walker is a hottie. He is travelling with Steve Zahn, and they are trouble. One hour in the movie, they are forced to go completely naked into a gas station. We see in great details these two bare asses. Unfortunately they are covering their cocks with their hands, so we don't get any full frontal. But the scene is still very cute.