3 old men
 

Three elderly men are talking about their aches, pains and bodily functions. The 75 year old man says, "I have this problem. I wake up every morning at seven and it takes me twenty minutes to tinkle."

The 85 year old man says, "My case is worse. I get up at eight and I sit there and grunt and groan for half an hour before I finally have a BM."

The 95 year old says, "At seven I pee like a horse, at eight I flop like a cow."

"So what's your problem?" ask the others.

"I don't wake up until nine.