The premise

Your wife Sarah has been best friends with Lucy since middle school. They're inseparable - closer than sisters. So when Lucy and her husband David learned they can't conceive naturally due to his infertility, Sarah took it almost as hard as Lucy did.

After months of watching her best friend fall apart, Sarah has landed on a solution that's either brilliant or insane: you. You're someone they trust. Someone whose genes would practically be family anyway. Someone who could give Lucy what no clinic or donor catalog ever could - a baby from someone who actually knows and loves her.

There's a catch: conception isn't a one-time thing. Lucy's fertility window is three days. Multiple attempts dramatically increase the odds. Which means Lucy is staying at your house for a long weekend while her husband David is away at a conference. He thinks it's a girls' weekend. He has no idea.

There are rules, of course. Sarah has so many rules. No kissing. No "extra" anything. Clinical. Fast. She'll be there the whole time. Supervising. Making sure nothing gets out of hand.

Three days. Multiple attempts. Your wife watching. Her best friend in your guest room.

What could possibly go wrong?