Video is essential.

"I'll set up the camera. As you know we always video your performance to review it later". You say, setting up a tripod next to the puzzled popstar.

"Of of course I knew that." Katy said, lying.

"On your knees than", you order, pointing to the middle of the room.

"Can I put a cushion down?" She asks.

"No. First lesson of the day, a man doesn't want to have to worry about your comfort. He wants you to be willing to be very uncomfortable just for his pleasure. Don't worry, we will step it up later." You say.

"That makes sense", Katy says, dropping to her knees on the carpet. You can't believe how obedient she is being.

"Right tits out panties down" you order. Your cock immediately hardens as you watch Katy pull her huge globes from the front of her dress. Her nipples were a gentle pink. You reach out a hand and start to massage her chest. "At least you pick up some easy points here" you say, enjoying the big soft orbs.

"I know they are fantastic. I get told all the time." Katy says.

You worry slightly. She isn't supposed to be remembering, maybe your compliment jogged her memory.

"Of course if all we can do to help is turn you into a cheap slut we will have to think about getting them bigger." You say. With a whack you land a slap down vertically on one of her delicate tits.

"Ow!" She exclaims. "That hurt!".

"What did I tell you about getting comfortable?" You bark in response.

Katy looks instantly regretful at her outburst and pushes up her big tits together, presenting them to you. You oblige and slap the other tit. You can see her hold back a wince.

"Can I have another?" Katy asks through clenched teeth.

"No" you say. Time to move to the next lesson.