Means you're squeezing me too hard. A teddy bear for example you could be squeezing it too hard and it would make the noise of meku.

Mekus is the nicest type of guy. He is nicer than Diego. Mekus is the type of guy to have loads of friends and move bare girls. Mekus also looks peng and his outfit is always on fleek

Mekus is the king of nerds, an alternate use of the word nerd.