Two crazy men

Two crazy men were committed to a mental institution near a mountain lake. They were taken out one morning for a walk, accompanied by a nurse. As the three strolled along the lake shore, an eagle flew overhead and pooped right on the bald head of one of the patients. The nurse saw what happened and said in great concern, "Wait right here. I'll go get some toilet paper." As the nurse ran back toward the building, one of the men turned to the other, pointed toward the nurse, started laughing and rolling on the ground, then said, "She's crazier than we are. By the time she gets back with that toilet paper that eagle will be far gone."