Boot Slave Under The Desk

Ive ordered the slave to lie down under the desk and clean my boot feet with his tongue while I check some stuff on the computer. I love a cigarette while he licks my boots and in inbetween I spit on the floor, drop my cigarette ash into the spit and rub my boot soles in the ashspit mix - then obviously he has to lick that disgusting mess from my boot soles as well!