Mejajah Share definition Flag The biggest insult you can call anyone. It means all hell to the person you insult! Dude, you are such a mejajah! ANd your mum, she's even more of a Mejajah! Mejajah by Mark Rosenberg February 1, 2004 0 0 Get merch Get the Mejajah mug. Buy Now — $32.95 See more merch