What is Ponka?

It's an urdu Word, Used For Degrade Or Avoid Someone, Like

1st Person: Please! Give Me A Cake From Your Box.

2nd Person: Ponka.....!x

Means (I'll Not Give You)(in Above Condition).

lafanga child says: ponka

reply his friend : 8 ka layga ya 9 ka

his freind reply : phir bhonka

that's mean ponka Word use in bad manners