Sardar and a Cockroach

A Sardar was experimenting with cockroach, first he cut it's one leg and shouted - walk.

The cockroach walked.

Then he cut it's second leg and shouted the same.

The Cockroach walked.

Then cut the third leg and did the same. At last he cut it's fourth leg and ordered again to walk!

The cockroach didn't walk.

The sardar shouted, " I found it. If we cut four legs of a cockroach, it becomes deaf."

So, that was the joke. Don't we do the same thing in our regular life? 

Are you a Sardar?