You are old when

when you've been married 39 years... (yup, yesterday).

when your children are more than half your age...(I'm 61, they're 35 and 37).

when people ask if you are the original owner of your 1968 automobile...(how old do you think I am?)
Hell I can beat that . I'm 66 and my daughter is going to be 40 next month.