Meu Share definition Flag A Meu is a gigantic weeaboo. If someone is called Meu, they most likely orgasm at the mere mention of Japan or anything remotely Japanese. Sane person: Hey, wanna get some Sushi?Meu: Uggghhh *Jizz leaks down leg* Meu by Princess Ren July 10, 2015 Get the Meu mug.