Exchange

EXCHANGE
Santa goes into a restaurant and orders Kachoris. When they come, he complains that they do not look good and he changes his order to Masala Dosa.
After he eats the Masala Dosa, Santa stands up and starts to leave the restaurant.
"Wait a second," the manager shouts after him. "You have not paid for your Masala Dosa."
"What are you talking about?" Santa says. "That Masala Dosa were an even exchange. I gave you the Kachoris for them."
"Yes," says the manager, "but you did not pay for the Kachoris either."
"Why should I pay for them?" asks Santa. "I didn't eat them."