Speaking of Parents having sex...
I was hanging out with this gamer chick named Karen one night. We were at her house playing Halo Co-op and her dad walked by during a cut-scene, laughed, and walked away. We got bored so I asked if she wanted to go for a walk. Said yes, told parents we'd be back in an hour. About 20 mins and a couple blocks down her street she remembers that someone has to call her that so we run back to her house.
The Lights were out (it was about 10. Screw curfew) so we thought her parents were sleeping. Quietly she opened the door, and we walked up stairs to her room. Tip-toeing by her parents bedroom we here giggling. Ears to door, we found out that her dad's new nickname was Master Chief
She blushes and sneak into her room and naturally I stay and listen
Video game logic made me assume that mom would be Cortana, but sadly I heard her dad say "I'm ready to land Captain Keyes." Fun night.