i've seen a few and they are all hot. one of them is belladonna and lexington steele or mandingo i cant remember which one. she says something about smelling her ass and starts sniffing the other girls asshole and buries her face in it sniffing it.
i also had some from mfx and they were hot although the girls were very skinny.
there is two ones with this mature blonde girl and a young latina where they both sniff each others asses and fart and talk a lot during it i have it on my computer somewhere, i think the blonde one was jailed for animal abuse or soemthing, i think it was to do with porn too.