Actually a microwave oven

Santa Singh goes into an electrical goods store, you know one of these stores that sells fridges, TVs etc.

Santa walks up to the salesman, points and says,

“I want to buy this TV.”

The salesman say, “Sorry, we do not sell anything to surds.”

So Santa goes away and comes back two hours later after having a haircut, points and says,

“I want to buy this TV.”

The salesman once again replies, “Sorry, we do not sell anything to surds.”

Santa goes away again and comes back two hours later with his beard and moustache also shaved, points and says,

“I want to buy this TV”.

The salesman once again replies, “Sorry, we do not sell anything to Surds, Why are you wasting your and my time? Don’t come back in the shop again!”

Santa says sheepishly, “OK, you do not sell to Surds. But tell me how did youfigure out that I was a surd even after I had shaved my hair, mustache and beard.

The salesman replied, “Because that TV you want to buy is actually a microwave oven.”