And old woman in England was caught on camera thumping jewelry shop robbers with her handbag. Has this story reached the United States?
http://www.youtube.com/watch?v=98HPgFf6bJA
Better picture and story here:
http://www.itv.com/anglia/one-woman-crime-buster49746/?cmpid=nl_110208local
"Supergran" was the name of a children's programme here in the UK featuring a superhero gran. I don't know if you had that in America but that's where the epithet comes from.