Painful barefoot trampling with My heels and tiptoes deeply into My slut's stomach (English language)

Description: I'm mocking on my slave's body, especially his stomach and solar plexus, but this bitch isn't allowed to make any sounds during the process, it doesn't matter how painfully it is. there are lots of full-weight standing with one foot deeply into his guts right on the heel, or tiptoes: it's so funny to feel his organs under my bare feet! i'm also squatting and bouncing in such position on my tiptoes. there are much of facestanding actions as well.