In a musical number about bowling, there are double-entendres, i.e. "score tonight" which can easily be translated as slang for "having sex tonight".
Way less and tamer sexual content than the first film
There is a song that is about reproduction.
A musical number resolves around the sexual education course of high school students, and many flirtatious and sensual gestures, dance moves are made throughout. There are also some sexual images
Another musical number is about a teenage boy convincing a teenage girl that a war is starting, and tries to manipulate her into giving him her virginity.