A physisist explains to his friend that he is afraid to fly on an airplane. He says that he has calculated the probability that somone would bring a bomb on board and that while the chances were quite low, they were still too high for his comfort. A few weeks later his friend sees him on an airplane. He asks what made him change his mind. The physisist says "I didn't change my mind, I simply calculated the odds of their being two bombs brought on board simulteneosly. The odds of that happening were low enough for me to feel comfortable, so I brought my own bomb."

lol,cute