A man and a woman are seen completely naked having sex. The man's bare butt (only nudity) is seen thrusting into the woman.
Lucetta (Milla Jovovich) is seen walking naked. Her pubic region isn't visible but her breasts are and she caresses them.
A woman tells a man that she isn't wearing panties and she puts his hand below her skirt and finger movement is seen. The woman moans and she grabs the man's crotch but the man stops and the woman seems disappointed.
A man and a woman's skin are seen (her legs wrapped around him.) The man thrusts into her but we then see a woman thrusting on top of the man. No nudity is seen but it is referenced later that she gave him oral sex.
Lucetta's (Milla Jovovich's) breasts are visible as she lies on a bed after she and Jack (Robert De Niro) have sex.
Stone (Edward Norton) tells Jack (Robert De Niro) that he misses having sex with his girlfriend (he is descriptive.)