You know you're getting old when:

*Everything hurts, and what doesn't hurt, doesn't work.
*You feel like the morning after, and you didn't go anywhere the night before.
* Your knees buckle, but your belt won't.
* You can only burn the midnight oil until 9 o'clock.
* The twinkle in your eye is the sun hitting your bifocals.
* Your back goes out more than you do.