At a party, a boy removes a young girl's bra, exposing her breasts, and fondles them.
A girl asks her friends what is the "biggest one" they have ever seen in person, obviously referring to the biggest penis they've ever seen.
A naked female body is visible (though not explicitly) through the frosted glass of a shower stall.
Two people are in bed, obviously naked and about to have sex.
A boy and a girl are passionately making out in a night club bathroom. The girl's breasts are exposed and the couple, still kissing, make their way to a stall, presumably to have sex. No intercourse is shown, but is implied when the boy emerges from the bathroom with hair and shirt rumpled.