Yes, I know it’s all psychological

At a dinner party, a man serves 3 bowls of soup. The first two bowls are round, but the third is square, so he decides to keep the odd one for himself.

One of the guests says, “Oh no, I don’t need a round one. Can I have the square one? It will taste better that way.”

The man replies replies, “You know that’s all just psychological, right? In reality they will all taste the same.”

“Yes, I know that it’s all psychological,” says the guest, “That’s exactly why I want the square one.”