As I was walking back to my room last night to go to bed I thought about how the new electric toothbrush is very similar in form and function to a vibrator. I told Sarah this when I returned to the bed and we had a chuckle about strap-on electric toothbrushes and other similar bad ideas for about half an hour. As she realized it was getting late and that she wasn't going to get a full night's sleep she said "I could burn the candle on this end with you all night long." I could see she was torn between sleeping and continuing to stay awake chatting.

It's good to have someone to laugh at your jokes. Especially when so few of them are funny.