A shibboleth is a word, custom, or habit that signals in-the-know status in a particular group, and British proper names are a minefield of them. You may have heard that Worcester is "wooster" and Leicester is "lester," but do you know what to do with Aslackby, Woolfardisworthy, Wriothesley, and Fetherstonhaugh? This charming ditty from the Reginald Pikedevant YouTube channel will walk you through some of the odd sound-spelling pairings that distinguish the native from the newcomer.