Hunger
The slave must kneel in the dirt behind the park bench and silently study the backs of his mistress’s boots and socks whilst she tucks into her lunch high above him. Some slave owners (not this one) will occasionally share scraps of their food with their slave – even if only a half-chewed piece of lettuce. But this slave never gets to eat anylunch; or dinner. He just gets one miserly bowl of tasteless slave gruel each morning, and supplements his diet with the dirt from his mistress’s boots. Because that’s the way she likes it.
No wonder he is studying her boots with such a hungry look in his eye!