Happy National Beer Day, everybody! While you may not need an excuse to drink beer, obscure holidays like this one have become all the rage in the last few years. To get to the bottom of the craze, CBS This Morning's Michelle Miller interviewed the people who exploit it every day: the founders and staff of Someecards!

What's your favorite weird holiday? More Herbs, Less Salt Day? National Talk Like a Pirate Day? Or Father's Day? The list goes on.