I'm in dreadful trouble with Dr Phillips the biology master! I've been sent upstairs to get changed into the school's regulation punishment outfit, complete with shamingly awful big white panties! I strip out of my kilt, white blouse, normal panties and black socks, and put on the AWFUL punishment panties, white vest tucked in, and white knee socks. This is how I have to walk to Dr Phillips' study - and ANYONE could see me! Not only that, but I have to take the punishment strap with me, to make it perfectly clear that I'm about to be spanked. Dr Phillips is very stern, and takes me over his knee for a long spanking over my thin (embarrassing) punishment panties that don't offer any protection at all. I'm soon wriggling and screaming and apologising, but he doesn't stop until he's finally satisfied that I've learned my lesson. And then, like always, I'm sent to bed for the rest of the day. But back in the dormitory, the spanking doesn't seem so bad after all. I love it that he always chooses the over-the-knee position, and I love it that he's so strict. Despite my bruised bottom, I soon find myself humping a pillow and imagining him spanking me in all sorts of other naughty positions! It's enough to make a girl have an orgasm! Which I do. But don't tell anyone I've got a crush on Dr Phillips!