Betty Lou was nice enough to forward some of the theories we came up with while we were in Texas since I couldn't write fast enough that day to record all of them...
1) Ryan's.....Cinderella story but the prince had a leg and foot to try on all the girls instead of a glass slipper
2) Bella's...Santa Claus made too many doll legs and they were sort of laying around the earth
3) James' ...A woman didn't want her husband to chase her so she stole his leg
4) Betty Lou's .... Guy driving down I-10 and rolled down his window and stuck his leg out window to cool off and it blew off
5) Neighbors' stories....
a) fell out of an airplane
b) guy works at I-Hop (think that's pretty funny)