You want some advice? I'm not sure if I'm the right person to ask, but tell step-mommy what's going on. OH. You want SEX advice?! About anal and feet? Well, both of those kinks are quite common and totally normal, but I can understand why you'd be apprehensive about telling a girl you want to try them. Here, I'll walk you through it and you can practice! Just pretend that I'm your girlfriend and not your step-mom.