Blowjob is mentioned once and later discussed very briefly

Sex, no nudity.

Two girls walk in on a third girl giving oral sex to a fourth. All are full clothed and the girl receiving oral sex is wearing a skirt. No nudity is shown.

A man talks about losing his virginity in a bathroom.

A couple has sex in the bathroom. No nudity.

A couple is shown having sex under blankets. No nudity.

Fairly frequent use of F-word plus milder profanities throughout

Occasional drinking and smoking but no substance use is shown or mentioned in the film