Apun baap ka naam roshan kar rehle hai.

A Munna Bhai lightbulb wordplay joke where Circuit's explanation for writing his father's name on a bulb is perfectly logical by his own standards.

MUNNA BHAI : Oye Short Circuit yeh light
bulb pe baap ka naam kya likh raha hai?

CIRCUIT : Apun baap ka naam roshan kar rehle hai.