Jason Teresi is naked 68 minutes in the movie. We see his butt as he is on his knees throwing up, and then more after he stands and moves around naked.
Paul Denniston is also naked 93 minutes in the movie, and we see his butt as he is making love to Jason Teresi.

28 minutes in the movie, Gerard Butler and Billy Connolly both undress completely to go swim in the ocean. As they run naked we see their penises flopping around and then their butts. The scene is not very long but it is very clear. Both have good-sized uncut penises. Gerard Butler has a nicer butt as he is younger.

In this movie from 1984, there is one quick scene with front and rear nudity from Grant Cramer. As he gets out of bed naked, we get a quick glimpse at Grant Cramer's small cut cock and then at his nice butt. He is seen shirtless at several occasions in the movie, but that's the unique scene with real male nudity.

In a first scene, Carloto Cotta is peeing naked in the bathroom. We see his amazing bubble butt as he does. Then when he is done, he turns around and we get a good look at his nice uncut dick. Then he fights naked with his girlfriend. His dick is semi hard and is quite impressive as it is wagged in all directions.

In this short movie, Harry Eden shows his butt and his big cut cock. He seems to be semi erect, and clearly proud of his big dick.

32 minutes in the movie, we see Tom Berenger's butt in a mirror as he is making love to a woman. We see Tom Berenger naked numerous times throughout the movie although he is hiding his genitals. 64 minutes in the movie, we see a close up view of his bubble butt. 67 minutes in the movie, Tom Berenger finally shows us his circumcised penis as he is wearing only a shirt and lifts a woman up in his arms. 81 minutes in the movie, we clearly see Tom Berenger's package as he flips around naked on a bed. And again a few minutes after we get a brief view at his dick and hanging balls. 103 minutes in the movie, we see Tom Berenger's butt as he undresses and when he gets on the bed. We also see his balls from behind hanging between his legs.

At the beginning of the movie, we get to see Lucas Pittaway's butt, as he drops his underwear. Later in the movie, he is cleaning a bathtub in his underwear. When he faces the camera, we can tell from the bulge he is a pretty big uncut dick. Bob Adriaens shows frontal nudity. He is a rather small uncut dick.

Alexander Fehling is seen dressing down in front of a woman. As he gets completely naked, the camera is positioned so that we cannot see his penis. In another scene he gets out of the bathroom with a towel around his waist and then drops the towel and gets on the bed naked. We briefly see his butt when he does that, but cannot see any penis hanging. Again in another scene where he makes love to a woman, we only get to see his butt, with more clarity this time. His butt is smooth. There is finally a scene where we can very briefly see his dick and pubes. He is waking naked behind a glass door. There are a few frames where we see his fairly long uncut dick and later his untrimmed pubes. There is finally a long scene (1 min 30) with August Diehl completely naked in the backyard. He has a thin uncut dick and a nice white butt.

Michael von Steele is the one showing the most nudity with a quick but clear frontal shot, showing a pretty thick cut dick.
David Moretti has an amazing shower scene without frontal nudity, but with great butt view.
Jesse Cutlip also shows rear nudity in this first season of The Lair.

Jesse Metcalfe is shirtless in many scenes of the movie.
69 minutes in the movie, Jesse Metcalfe is wearing nothing but a thong. We see his fine butt for many long seconds. The thong is not hiding much of Jesse Metcalfe manhood which seems to be medium sized.
You will also be able to admire Jesse Metcalfe man boobs in this movie.