Wouldn't you like to crack an egg perfectly?
When opening an egg with one hand, having a clean, horizontal crack makes it much easier.
While it's common to tap the egg against a flat surface, there's actually a better way.
Try printing this out and see for yourself.

+Source of story

[https://www.ntv.co.jp/megaten/archive/library/date/16/03/0320.html](https://www.ntv.co.jp/megaten/archive/library/date/16/03/0320.html)