One of the opening shots is a couple making out in a car, he runs his hand up her leg, crotch and side. No nudity and she smacks his hand away after he tries to "cop a feel."

Fairly bad. Specific swear words include shit, fuck, cock-sucking, etc.

Two guys are hot boxing in a car. Not sure what they're smoking (either a really large weed joint or a cigar) but in a humorous exchange one says "careful how much of that stuff you take in dude, once I sparked up this big cocksuckin' joint, and man, I saw Elvis!"

A man accuses his buddy in the car of dropping too much acid. Then says "I'm layin' off this monster weed, man."

Not really any to speak of. The scenes where the Atlantean humanoid is attacking are fairly mild compared to other monster movies.