I've asked you to stay behind after class, because I've noticed how distracted you've been during lessons and I want to get to the bottom of it. I have my suspicions that this is all because you're spending your time staring at my legs! Is it my sheer tan pantyhose that drive you so crazy? Or my high heeled shoes? Oh, I see, it's trying to see my panties by looking up my skirt that's getting you so hot! Well, perhaps I can help you with that... Stripping out of all my clothes except for my tight, white, nylon granny panties, I encourage you to get your cock out and jerk off to my gorgeous crotch and bottom, encased in the underwear! You especially like the crotch don't you? Very well, I'll give you every view of it that I can, while encouraging you to continue masturbating to the arousing sight.