“Got a problem here, boss?” Carl asked.

“She gave my money to somebody else,” the man said, jabbing a thick finger at my face.

“I want my eighteen dollars back, right now.”

Carl looked at the computer screen and then at me.

He took a little override key out of his pocket and stuck it in the register.

“That’s my fault, boss,” Carl told the man.

“The machine skipped a line.

I’ll put twenty on pump four right now, on the house.