I was having breakfast the other day with a friend who was giving dating advice to his son. For purposes of his anonymity, I am going to call just call him "Son."

My friend said, "Son, you're 18 years old, so I am going to tell you how you date. Since you are 18 years old, you are allowed to date a woman half your age plus seven." Son looked at him and said, "Alright, Dad. You're 50, so that means you can date a woman who is 32. And that means I can date a woman who is 16."

From where did this ridiculous rule come? You can date someone as young as half your age plus seven years? It's so male-skewed that it's ridiculous.

It's no wonder that so many women feel that men their own age are too immature. It's because of this urban legend that has gone around forever.

Based upon this rule, the only time that a man can date a woman his own age is when he's 14 years old (because half of 14 is seven, and seven plus seven is 14). So the ripe old age of 14 -- the age when you still have pimples, are as insecure as can be and are unlikely to get anything more than a kiss from a woman your own age -- is the only time when you can enjoy dating a woman your own age?

What about if your 10-year-old looks at you and says, "I'm ready to date, Dad"? Do you say, "No problem. Half your age is five. Add seven to that, so you can date a 12-year-old -- an older woman"? There is so much a 12-year-old can teach a 10-year-old -- advanced coloring, advanced texting, and so many other important life skills.

Then you get a little older. You're 20 years old and, under this rule, you can date a 17-year-old. Great! There you are in college, and you get to go back to high school again to find a girlfriend.

When you're 25, you can date a 19-and-a-half-year-old. So there you are in the working world for the last three years, and now you can date sophomores in college. You can go back to attending frat parties and having people throw up on you.

When you're 30, you can date a 22-year-old. That's exactly where you want to be. You have been out in the business world for eight years, and you want to be dating a girl fresh out of college? Do you really want to date someone who hasn't actually had a real job yet and is still going out and drinking like a college student?

When you're 35, you can date a 24-and-a-half-year-old woman. Now you're dating someone 11 years younger than you. Your friends are going to be really impressed that you can date a younger woman.

When you're 40, you can date a woman who is 27 years old. All right. So now she seems like an older woman, at least. She's been around the block a bit, but she's still not a luscious, incredible woman over the age of 30 yet. Under this formula, you can't even date a woman over the age of 30 until you have hit 46.

At 46, you can finally date a woman who is 30. That's when women start to hit their sexual peak. So at 46, you finally get to have incredible sex with a beautiful, mature woman -- but you have to wait 46 years to do it, according to this urban legend.

When you're 50, you can date a 32-year-old woman. That makes sense, considering the fact that an 18-year age difference is something to which you should really be accustomed.

At 60 you can date a woman who is 37. At 70 you can date a woman who is 42. Wow, at 70, the 42-year-olds are probably some of your daughter's friends from high school who grew up hanging out at your house and who have now gone through divorces. So finally, after all these years, you can actually date the kids you knew when they were kids.

At 80 you can date a woman who is 47. That's exactly what women are looking for at that age. They would love to hang out with an 80-year-old guy. Here they are, still looking great, young and fantastic, and there you are with your skin sagging everywhere. Half the time you can't even get out of bed without feeling pain, but thanks to Cialis, you're always ready to go.

So how convenient is this rule for men? And why can't women institute this rule? Why can't they go younger?

When women date younger men, they are called "cougars," and people say they are messing around with younger guys. There is a negative connotation to a woman dating a younger man.

As a man, though, you are congratulated if you are 80 years old and dating a woman who is 47 years old.

Come on, guys. It's insane how ridiculous these rules are.