I once did a very hilly 30-mile ride while singing the "Ice Cream and Cake and Cake" song from a Baskin Robbins commercial.

I also once did half a Livestrong Challenge singing my college fight song (Fight on, Pennsylvania, get that ball across the line. Fight, you Pennsylvanians, there it goes across this time. Red and Blue, we're with you, and we're cheering for your men. So it's fight, fight, fight, Pennsylvan-i-a, fight on for Penn.) This started after saw a cyclist wearing a jersey with the Penn Hospital logo on it.