Your step-sister London, brings you into the bathroom for another phase of your training.  Every time she goes to the bathroom she wants you to behave like a good and crawl in there with her, and sit by her feet. You may have to do some crotch sniffing after she goes, but for now she wants you to crawl over to her and sniff her sweaty crotch before she goes to the bathroom.  She knows what you really want to sniff though, her butt, so she turns around and tells you to get your nose deep in her crack.  She then remembers that she didn't have you lick her feet yet. Not only does she make you crawl over to lick her toes while she is standing but as she pulls down her panties and sits down on the toilet she tells you to crawl over to her feet and start licking the bottoms of them. After you properly lick her soles clean she feels the need to finally pee, so sit by her feet like a good boy as she lets it all out. Now the next phase of your training really begins... crawl over in between her legs and put your tongue to work.