Squirt salt water up one nostril, let it circulate in your cranium, and then drain out the other side.

It’s one of the strangest pseudo-medical things I’ve ever done. It feels about as exciting as it sounds. I don’t think it does anything useful, but there are a few interesting side effects:

1. You can feel your sinuses fill with water. It’s a little like getting a snoot full of pool water on accident, but without the chlorine
2. If your nose is slightly stuffy, the pressure induced by the squeeze bottle will do many interesting things to your eyes and ears. Namely, make them uncomfortable.
3. You look and feel like a complete idiot, and the logic of sinus squirting rivals that of snipe hunting. Apparently it’s a real thing though. I guess.
4. The most interesting side effect however, is that minutes, hours, or even days later, a gush of trapped water will work its way out and and effectively spew soggy nose goblins all over the table/computer/dinnerplate/date you are sitting near. You will have no warning, and no chance of stopping the flow.

Thanks a ton, Oprah.