Last Christmas when my 22-year-old daughter came home to visit, I was able to ride faster than her. But just barely.
Since then she's been riding a lot, and did her first century at an average speed of 15.5 MPH.
So I'm going to do a lot of training between now and Christmas to see if I can extend my dominance by one more year. My secret weapon is that it's too cold and dark for her to ride much (in Kansas City), while I can do a lot of rides.
Wish me luck.