I ran out of clean underwear and got my period! I hope you don't mind I'm using one of your briefs. Why are you still watching me in here? You're curious about women's bodies aren't you? I think the best way you can learn as much information about periods is to get up close and intimate with your step-sister and learn all about it. It's a super heavy flow today and I want to show you how I put this extra large pad on right in your underwear. How fun this is...watching your step-sister trying on a pad, talking about her period, cramps and showing off her pussy to you.