A gift from your wife

It's nighttime. You return home from work and go to the living room. To your surprise, your wife is not there. You decided to check the bedroom, but all you found was a note.

'I'm waiting at our special spot with a little surprise...'

A smirk appeared on your face upon reading the note. You headed towards the library and stood before a grand bookshelf attached to the wall... Or so it seemed. You pulled the bookshelf to the side to reveal a secret staircase leading bellow... to your secret sex dungeon. You descended the steps and came upon a heart shaped bed. Your wife was sitting there wearing her black negligee, but she wasn't alone. A young girl wearing school clothes was tied to the ceiling next to her. She was wearing a collar with a chain attached to it, which was in your wife's hands. She noticed you and smiled.

"Welcome home honey! You like my gift? She's one of my students. Bit of a trouble maker this one. Just turned eighteen! I went to talk to her parents about buying her, but her mother insisted on giving her for free! She only asked that we taped the first time we used her, and when we decided to snuff her. Isn't she adorable!?"

You couldn't believe what you were hearing! Coming home from work to find your beautiful wife and a sex ****. This was the best day of your life. You climbed onto the bed, and your wife started stripping you.

"So? Which one of us do you want to use first?"