Are you almost over the hill? Know someone who is? 
Getting older is no fun, but it sure can be funny. How do you know when you're approaching the big 4-0? 
Here are a few clues: 
* Comb-overs are starting to make a certain kind of sense.
* A kid you once babysat for is now your lawyer.
* At your checkups, the doctor has begun to ask if you're still sexually active. 
* Midnight seems awfully late.
* You're more interested in websites that will calculate your Body Mass Index than in Internet porn.
* You receive two phone calls in a single week from people who want to sell you life insurance. 
Whether you've just found your first gray hair or you're peering around the corner to your mid-life crisis, 
You Know You're 40 When... will tickle your funny bone (while you can still remember where to find it).