how to tell if an earwig is male or female

You're sitting around the campfire and an earwig crawls into someone's ear. After it's crawled out, or been shaken out, and all the hoohah has died down why not impress your pals by knowing whether they just got snagged by a girl or a boy? Simple: a female earwig has straight pincers that almost touch; a male has curved, almost semi-circular pincers with a gap between them.