Without bonus : confessions of a bank teller

On the way to work Karin found a wallet. It contained several thousand Swedish crowns, she called the police’s lost and found and told them about her find.
In the afternoon an older gentleman shows up. He has his son with him.
The police have used the details about the wallet to get in touch with him and now he is here to pick it up. He takes the wallet from Karin and turns around to leave.
“What are you doing, aren’t you going to leave a finder’s fee?” says the son.
The father looks angrily at the son and takes out a 50 Swedish crowns bill and gives it to Karin.
The son’s face turns red, he takes the wallet from his father and removes a 1,000 Swedish crowns bill and hands it to Karin. The father tries to protest but he doesn’t have time, the son firmly takes him by the arm and leads him out of the bank.
“You are seriously wacko,” says the son.