It must be around forty, when you're "over the hill." I don't even know what that means and why it's a bad thing. When I go hiking and I get over the hill, that means I'm past the hard part and there's a snack in my future. That's a good thing as far as I'm concerned.
Seriously...I'm Kidding (ed. Grand Central Publishing, 2011) - ISBN: 9780446585033