Didn't small heath used to give them out so they could all clap along to that ELO tune they played before the teams came out?
The clappers just reinforce what other fans think that Norwich fans are all inbred.
Small Heath had them at one time when they were in the Premier League. The Brady Bunch saw them in use at Fulham and replicated it for the next home game.They weren't very popular though, they had BCFC written where SOTV should've been.
I like normal hand clapping, especially when the attendance is announced, I love it when everyone claps that