Random Wednesday - Tradução em português

Hello, guys!

Well, I'm going nuts, because I've been seeing a lot of this "Random Wednesday" lately, but I still don't know if I got the idea of it.

As far as I could understand, it seems it is a term used to express that Wednesday is the specific day for random silly/goofy/weird/awkward/misfortuned (whatever) things to happen, but I'm not 100% sure yet. (Gosh, it seems so stupidly clear&obvious now! lol) #insecuregirl

I googled the expression and yes, I found many - many many and a little more of many - "random Wednesday facts", but no detailed explanation (I really want to be certified by a description! haha).

Sooooo, does anyone know what it actually means? And, please, can anyone tell me the story of this "random Wednesday"? Why Wednesday? Oo

haha :D

Thank you! :)