Crying while you cut an onion is annoying at best. There are plenty of tricks that help stop the tears — including putting bread in your mouth or wearing goggles — while you get the job done, but what if I told you those tears you produce have a purpose? What if I told you those tears can help you ... be a productive human? Before I confuse you anymore, let's watch this video.
As you can see above in the video, the man cuts a red onion so he cries, which wets a stamp. He then places the stamp on an envelope and closes the envelope with a strange contraption that involves a drinking glass. I'm impressed that this actually seems to work — and equally impressed by how ridiculous this is.
The internet is a strange place, man.