It's a problem that might crop up this summer. You're outside on a hot day with friends and you've got a case of cold delicious beer. But you're not going to open these beers one at a time like a chump. If you're these German men you've created a device that will open an entire case of beer all at once.
We're not sure if it's actually more efficient considering the device won't be that useful opening a six-pack or an individual beer but we applaud the inventiveness. In other odd German beer news there's also this odd video of a man opening a beer with a backhoe. Impressive but not efficient.