Why did Dorothy get lost in Oz?
She had three men giving her directions.
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."