You Are My Bootjack

Come on, bootjack - you are now going to fulfill your special task and gobble my dirty boots clean. Get out your tongue and munch - do you get it? Youll slurp my boots only from the bottom, tho', only the dirty foot. Dont touch the rest - just the dirty foot and heel. And youll munch it all - no matter what a dirty mess got stuck down there, you are going to swallow it, all the dirt!