I'm jumping onto the slave's belly from the stool. He's lying on the ground and serves me as a trampoline. Again and again I jump onto him with my bare feet - his soft belly is just perfect for that! And it's so much fun to jump on him! Even better when I can enjoy the trampoline slave's humiliation as I work out on him! I jump on his body and he has to say "DONG"! This slave truly internalized his task and serves me unconditionally! That's how I like it!