1. You know you're over the hill when you are arranging your hair instead of combing it.
2. You know you're over the hill when your idea of a good workout is standing up.
3. You know you're over the hill when you start picking your teeth out of the popcorn.
Doctor: "Good news you passed your hearing test!"
Patient: "HUH"
Do you know the difference between genius and stupid? "Genius has its limits."
Did you hear about the Antartian parachute?
It opens on impact.