@porsupah

A train conductor is driving a train with 50 passengers. He misses the last stop, crashes the train, killing everyone on the train but him. He gets sentenced to death by the electric chair, but gets offered a last meal. He accepts, choosing just 1 banana. After eating his banana, he is given the shock, but nothing happens. They shock him again, and again nothing happens. They let him go and he gets his license again.

He has 60 passengers, and he crashes the train again. He gets the same sentence. Upon being asked what he'd like for his last meal, he chooses 2 bananas. He eats them then enters the room and sits on the chair. He is given the lethal shock, but nothing happens. They try a few more times with the same result. They decide to let him go and he gets his train conductor license back.

He has 69 passengers on board when he crashes and everyone but him dies. He is given the same sentence but when he asks for 3 bananas as his last meal, they deny his wish: "No, I think the bananas have been making you invulnerable to the chair". He sits down on an empty stomach and when he survives multiple shocks again, they ask "How are you surviving? We didn't let you have any bananas!" and he replies "It's not the bananas. I'm just a bad conductor."