Nothing, Zero, Nada... Used almostly when bragging about not paying for a service or something.
It can also be used as an insult for saying someone is broke.
eg 1. I no get shishi for my phone but MTN allow me make call.
eg 2. Emeka no get shishi for pocket.
Used to indicate agreement or to acknowledge a statement or approval
Person 1: We need more stew for this rice
Person 2: Shey
["Right", " Agree", " Approve"]