He would obviously be surprised at some of the girls she knew. Sasquatch for example.

"Informal games tend toward informal rules Bill! I can get the ball from point A to point B, or guard the person that is, it's all a matter of 'Hey, run that way when I give you the ball don't get smooshed' right? Who needs more rules?" And yes, she may be offering this topic up as a means of distraction.