Odyssey: The Ultimate Trip (1977)

One of the girls has a shaved side undercut and long blonde hair — stands out right away. She’s slim, got a couple tattoos, and goes from sucking the guy’s dick in close-up to getting pounded in doggy style on a couch. The other girl’s got curly blonde hair, thicker build, and jumps in for kissing and grinding while he fucks them both. Scene starts with the two girls flirting in a dim apartment, then he joins, goes down on one while the other jerks him off. Later, the undercut blonde is on camera using a toilet in a bathroom stall, standing after sex, giving a clear view of her fucked-out pussy. Camera stays tight during oral, focuses on her throat deepthroat action and how far she takes it. Guy lasts a while, ends with creampie on one of their backs.