In this clip Mistress Vixen decides to play with two slaves, one naked on the floor to be trampled as she whips and flogs the other naked slave restrained on her whipping frame.  Mistress stands on one slave whilst whipping the other. The trample slave isn't as tough as Mistress had hoped and makes more noise than the one being flogged, he seems to be moaning for both of them!

Mistress selects a more serious whip, but the trampled slave proves too wobbly and eventually gets a break from his suffering as Mistress instructs him to turn over on his front. Mistress gets sick of his moaning and instability so makes him raise his feet, which she then whips, seems he isn't good at taking trampling pain, and isn't good at taking a whipping on his soles either.

Mistress whips both slaves, but the whimpering and fear of her trample slave seems to really excite her, so she whips his feet time and time again, enjoying the reaction which makes him smile.