"I'm really tired, I'm going to bed soon." Mrs F tells Mr F after getting the kids down.
"Oh." Mr F replies somewhat shocked regarding the unusually early hour.
About a half hour later Mrs F returns from their room.
"Alright I'm going to bed. If you want to snuggle me I'll be in my boudoir." She says then returns to their room.
After a bit Mr F does finally come into the room.
The lights are on.
Mrs F is fully dressed reading a book.
Mr F lies down.
"Want to turn off the lights and shut the door?" Mrs F suggests.
Mr F does, then lies down.
Several minutes later realizing that the point had not been driven home hard enough Mrs F says...
"You can commence having sex with me."
"OH... well... um... you're kind of springing this on me." Mr F stutters.
Mrs F rolled over and went to sleep.