Team Gum! When I read "I am sure I look crazy rattling a dozen little tubs of gum at the self-checkout", I died - I'm not alone ! I'm pretty much the same: not 40 or 60 pieces a day like in my second year of university, but still around 20 a day. And yes, good gum is surprisingly hard to find. The flavor lasts "5 minutes" then it goes rock-hard five minutes later.