I have my slave naked laid on the floor presenting his cock for inspection and my inspection will be made with the use of my boots and my boot heels. I like to use the whole part of my boots when inspecting my slaves cocks, the soles of my boots are used when standing on and squashing his poor little cock and my heels are used to spear deep into his fat ball sac. And when i'm not trampling all over his balls i'm stood over him sinking my foot into them with some kicks.