Heidi's ass is all sweaty after her workout so she put the slaves mouth to use. First she has him lick the sweat off her ass cheeks, then when he's done she says "lick my ass crack". The slave buries his tongue deep into her ass, licking up all the accumulated sweat and filth. "How does that taste?" Heidi says, knowing full well that it must taste horrible! But she doesn't care, she just wants her anus totally cleaned by this slaves tongue.