【How-to】How to Pee Melancholically!

After my personal verification, this experiment deserved the Best Self-parody Award of the year. First of all, prepare the experimental materials: a bottle of Methylene Blue powder (you can also buy it on eBay, but it's better to read its safety instructions before use, as some people may be allergic to this chemical substance, and pregnant women should avoid trying it). Oh, maybe you also need a slice of bread :P Next...