what is dyayi? I've seen many different translations. i know it means to dance or move your body some way but what does mean "mwen pral dyayi sou ou"?

 “M pral djayi sou ou” seems to mean “I’m going to flip out on you” (to be angry or furious).  I’m not sure what the context is.

It also translates to shake, to have the shakes, to go into a trembling fit.

Egzanp:
Fanm nan t’ap kriye nan antèman pitit li a.  Li t’ap djayi atè a.  Se dis gason ki t’oblije kenbe l anvan l te vin resi kalme.

“Djayi” can also mean “to dance”.

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