Wake up man!

Three old men are talking about their aches, pains and bodily functions. The 70 year old man says, "I have this problem. I wake up every morning at seven and it takes me twenty minutes to pee." The 80 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 bowel movement." The 90 year old man says, "At seven I pee like a horse, and at eight I crap like a cow." "So what`s your problem?" ask the others. "I don t wake up until nine!"