In this movie...

Martin Compston ends up making love naked on a bed. But the girl ties him to the bed, which gives us the opportunity of looking at him completely naked. Interestingly, when he first realizes that he got tied, he displays a big chubby. His dick is big, thick and uncut. Later as he keeps on fighting to free himself up, his penis has returned to a smaller state. We also get plenty butt shots during that scene.