"Geriatric problems" joke

Three old men are sitting on the porch of a retirement home. The first says:
"Fellas, I got real problems. I'm seventy years old. Every morning at seven
o'clock I get up and I try to urinate. All day long I try to urinate. They give
me all kinds of medicine but nothing helps."
The second old man says: "You
think you have problems. I'm eighty years old. Every morning at 8:00
I get up and try to move my bowels. I try all day long. They give me all
kinds of stuff but nothing helps."
Finally the third old man speaks up:
"Fellas: I'm ninety years old. Every morning at 7:00 sharp I urinate.
Every morning at 8:00 I move my bowels. Every morning at 9:00 sharp I
wake up."