One day, three boys were walking over a bridge when they heard a guy yelling for help. It was President Bush. He was drowning, and the three boys rescued him. He thanked them dearly and promised them whatever they wanted as a reward.
The first boy wanted $10,000, so Bush gave him the money. The second boy wanted a Ferrari, so Bush gave the boy a Ferrari.
The third boy wanted a wheelchair, Bush said, "Why do you want one of those, son? You're not handicapped." The boy replied, "I will be when my dad finds out whose life I saved."
(This joke actually takes the place of another joke which I found very funny, but realized that it might offend someone or hurt their feelings. If you want to know what the other joke was, let me know.)