Little Johnny was invited to a classmate’s birthday party on Saturday afternoon.

There were balloons everywhere, music playing, and a big chocolate cake sitting in the middle of the table. Johnny had already eaten pizza, chips, candy, and one very large slice of cake.

When the birthday boy’s mother started serving a second round, Johnny quickly held up his plate.

“Could I have another piece, please?” he asked politely.

The mother smiled, but then hesitated.

“Johnny,” she said, “does your mother allow you to have two pieces of cake when you’re at home?”

Johnny shook his head. “No, madam.”

The woman raised an eyebrow. “Well then, do you think she would be happy if she knew you were having two pieces here?”

Johnny looked at the cake, then looked back at her with complete confidence.

“She wouldn’t care,” he said.

The mother seemed surprised. “Really? Why not?”

Johnny smiled and replied,

“Because it’s not her cake.”