I can buy you once but I can sell you twice
You buy someone once but sell them twice and then you make them pay for it. It means you’re the worst kind of thief and they’re the one who lost out.
He bought his friend a phone and then sold him to his brother and then made him pay $10. He’s the worst thief.
She bought her brother a car and then sold him to her mom and then made him pay $50. She’s a total cheapskate.
He bought that guy a ticket and then sold him to the bus driver and then made him pay $2. He’s a total thief.