Lots of male nudity throughout the movie, mostly the main character (though there are also other characters shown naked in some scenes, including a few women).
There are two sex scenes in the movie. None of them show anything overly sensitive but in the first one, we can see thrusting while in the second one, we can hear moaning.
In a bathhouse scene, many men are shown naked and their butts can be seen.
During the last part of the movie, we see a woman only wearing panties and about to put on a coat. Her breasts can be seen for a fair amount of time.
By the third act of the movie, the main character locks out another man out of his apartment while he's nude. His butt is shown several times at great length, and at one point, we see a glimpse of his pubic hair when he tries covering his penis.
Sílvio Proença (the main character) spends much of the movie nude and covering his crotch while being chased by civilians and the police. His butt is shown several times at great length, and a few glimpses of his penis can be seen too.
In the last scene of the movie, Mendonça (after being locked out nude by Sílvio) gets chased by the police and some civilians. His butt can be seen multiple times while his penis is covered by his hands. At one point, a glimpse of his testicles from behind can be seen in a close-up shot of him trying to hide. In the last shot, he gets cornered by the crowd and is forced to face everyone with his arms up; the camera shot only shows his upper half, but he clearly has nothing on and everyone can see his penis.