You’re out for a walk down by the beach with a friend. There’s a guy stood there collecting on behalf of a charity. He’s been there all day and needs to go for a pee. ‘Will you look after my stall?‘ He asks. It’s for starving kiddies, so you say yes. He won’t be five minutes and you probably won’t have to do anything…
Just a minute later, a guy approached you with a donation. Oh, that’s nice. He hands it to you… Damn – it’s a hundred bucks! The guy who runs the collection will be back soon. He’s gonna be impressed you raised $100 in five minutes!
Well, he will be if you tell him. You could just pocket the cash. No one would ever know. And you could use the money, after all.