Mazebaan

There was some guy at the office who asked for ahson. The peon might have been told by the guard to inform ahson.

The peon slams open the development room and said "Ahson saab, aap ka mazeban aaya ay". A confused look on everyone's face and then a roar of laughter followed.
The guy had no idea what happened. Next came "sir, hor kia hota ay. Mazeban theek to bola ay". After having some more jolly moments with him. He was sent by the mehman to get his mazeban.

The peon still has no idea as to where he went wrong.