Must be some Bhojpuri which Md Akmal picked up ....he aint no Bengali after-all . In all my time of watching Bengali movies I haven't heard such expressions ever .
Am sure it must be from one of the B-Grade Bhojpuri movies , if at all it exists... ...
Don't be dissing bhojpuri bro I am a bhojpuria! and no no such words in Bhojpuri either.