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!

5 minutes in the movie, we see Franco Merli naked.
17 minutes in the movie, an uncredited black man is also naked. He is hung like a donkey. We can see his erect dick from behind in between his legs.
He is cut.
60 minutes in the movie, we see Ninetto Davoli's butt, and then his uncut dick.
Again we see both his butt and cock 63 minutes in the movie.

Walter Delmar is taking his shorts off 53 minutes in the movie, we get a good view at his butt and a quick and dark view at this penis.
Jared Grey is taking a shower 95 minutes in the movie, we see part of his butt when he leaves the shower.
Nick Salamone is fucking Jared Grey 91 minutes in the movie, and at that occasion we see Nick Salamone's butt.

Right at the beginning of the movie, we see Simon Goerts's ass and also his long uncut penis.
25 minutes in the movie, Sascha Backhaus is undressing. We see his butt but also his cut penis in the mirror.

In this short series, you have to wait for episode 2 to get nudity. Mark Priestley and Leon Ford show us full frontal and rear also. Mark Priestley has a nice cut dick. Leon Ford has a smaller uncut dick. In episode 3, there is additional nudity from Leon Ford, but only rear. In episode 5, Stephen Curry is naked but we mainly see his bushy pubes which are hiding his dick. We see it better but from further away when he is taken out of the room. We see his butt at that time too. When they are outside the barracks, we see Stephen Curry big cut dick and ass better. In episode 6, Mark Priestley is taking a shower outside in the nude with Matthew Whittet. We only see Mark Priestley butt and pubes in that scene, but we see Matthew Whittet's butt and nice uncut chubby. They are even comparing their dicks sizes when showering. These hot guys are also shirtless most of the time!

Garrett Hedlund is shirtless a lot in the movie.
30 minutes in the movie, Garrett Hedlund is naked and we see his butt as he is carrying a friend of his onto a bed.
For a frame or two we can see his penis. Garrett Hedlund seems to have a medium sized dick.

The first one to show skin is Allen Nabors. His friends pull his swimsuit down, and expose his white butt to the camera. Then Allen Nabors turns around and jumps into the pool. It's very sudden but he gives us a frontal. Then Danny Wolske drops his trunks and jumps also in the pool naked. We see mostly his butt, although part of his penis is briefly seen from the side. We see Allen Nabors and Danny Wolske playing naked in the pool, and we can see their blurred dicks under the water. Danny Wolske gets out of the water and shows us his butt again. Then he puts a towel around his waist, and goes sit by the pool. However the camera is low and we can see his cut dick under the towel.

11 minutes in the movie, we see Leander Lichti naked getting on a bed.
Leander Lichti has a big cut cock with very big balls.
12 minutes in the movie, we see his butt.

7 minutes in the movie, Eric Dean is in bed with Draven Gonzalez. We see Eric Dean's butt.
Within that scene, there are flash backs, in which we see Jonathan Williams fully naked. He has a big and thick cut cock as well as his butt.
56 minutes in the movie, we see Joseph Richardson, after he gets out of the shower, as he dresses back up.

12 minutes in the movie, Bug Hall is running naked in a forest. We get a quick view at his big cut dick.
13 minutes in the movie, he gets stopped by the people chasing him and we get a view at his butt.