If you're shopping in Walmart (which recently announced several store closures) and you hear "code red" crackling through the speakers, it might be the signal to head for the door pronto.

Shopping at Walmart is the kind of experience that can be totally uneventful, or it can easily turn into a trip that everyone on Reddit gets a good laugh out of. When it comes to the happenings at ...

Walmart uses a set of secret intercom codes in stores to help employees respond quickly to everything from spills to serious emergencies. And shoppers who know them could stay safer in a crisis. These ...