Nasty Nymphos 29 (2000)
This starts with Eliza Grant on her knees giving a blowjob to a tattooed guy while Hunny and Ruby Tuesday watch. Then it cuts to the guy fucking Hunny doggy style on a couch while Eliza gives her oral. Ruby joins in, giving the guy another blowjob while Eliza fucks her. The girls are all slim, Eliza and Ruby with long brown hair, Hunny with black hair. The guy is muscular with a bald head. The doggy style scene is pretty intense, and the close-ups of the oral action are well done.