A doctor is meeting with a husband after examining his wife. The doctor tells him: "Your wife's diagnosis is uncertain. She either has Aids or she has Alzheimers."
The husband asks: "What should I do, doc?"
The doctor advises him: "Drive her five miles outside of town and drop her off. If she finds her way home, don't fuck her."
There's a huge five-alarm fire at the local bar and trucks are dispatched from every station. When it's finally under control, one of the chiefs walks in and finds two Irish guys drinking at the bar. The chief says, "I can't believe you guys were in here the whole time. How'd the fire start?"
One of the Irish guys says, "We have no idea. It was burning when we got here."