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.
Means to add more content to something. To make something more pronounced.
Guy I go mammah you slap now o.
Abeg mammah that stew with pepper.
["Add", " increase"]