Old Age = You + 20 Years.

Related:

• Careful what you wish for... God created the mule, and told him, "You are mule.
  You will work constantly from dusk to dawn, carrying heavy loads on your back....
• There were these three old guys sitting around at a rest home, discussing their health.
  The first guy, 70 years old, said, "I just wish I was still able to take a good piss....
• Age is only a matter of years??
• Old age isn't so bad when you consider the alternative.
• Old age is not for sissies...
• You know your getting old when. . . ** There are three signs of old age.
  The first is your loss of memory, and the other two I forget....
• Q: How do you keep an Englishman happy in his old age? A: Tell him a joke when he's young.
• Old age and treachery will overcome youth and skill.