A guy in a bar leans over to the guy next to him and says, "Want to hear an accountant joke?"
The guy next to him replies, "Well, before you tell that joke, you should know that I'm 6 feet tall, 200 pounds, and I'm an accountant. And the guy sitting next to me is 6'2" tall, 225 pounds, and he's an accountant. Now, do you still want to tell that joke?"
The first guy says, "No, I don't want to have to explain it twice."