Research shows men are twice as likely to help someone out if she's a blonde. Our experiment found blondes certainly turn more heads, and that may be the fun a lot of people are looking for.
But our testers say fun, like beauty, is in the eye of the beholder.
"If you want a lot of glances, blondes. If you want something deeper, perhaps brunettes," Lorenz said.
And Mayers? As a blond he felt attractive and sexy, as a brunet he said he "felt real."
It's logical for parents to think that if they bring up to the topic of sex with their kids, their kids will think, "Oh, I guess it's time for us to do it!"
How do we explain intercourse, unwanted pregnancies and the risk of sexually transmitted disease to kids? The old conversation about birds and bees just doesn't cut it today.
There used to be so much ignorance about sex. Back in the 1800s even experts said eating spicy foods would lead kids to have sex.
Justin Richardson, author of "Everything You NEVER Wanted Your Kids to Know About Sex (But Were Afraid They'd Ask)," said that was the impetus behind old advertisements that said foods like graham crackers would make kids "wholesome as the great outdoors."
"Mr. Graham and Dr. Kellogg argued that bland foods would prevent kids from thinking about sex and trying it out," Richardson said.
Today we know more, and kids see so much more. Parents are now told talk to your kids more -- Don't wait for them to ask, you bring it up. 20/20 talked with some parents who did.
Alan Davidson decided to talk to his 16-year-old daughter. He told her he was just as embarrassed about what he was going to say as he thought she would be hearing it.
He told her men are "full of it." He warned her, "A man will tell you anything when he has an erection. ... You'll hear things like -- 'but I love you' or 'we don't need to use protection.' "
Davidson said he thought his daughter "looked relieved" after their talk.
She was. Kids 20/20 talked with said they were grateful their parents brought it up.
But couldn't bringing up the subject backfire? If you tell 12-year-old kids about sex, won't they want to go have sex?
"That's the myth and it's a really common fear," Richardson said. "But the research says the answer is no."
Richardson and others say there is no evidence that early talk leads to early sex, and 28 studies of school sex education programs -- regardless of whether they teach abstinence or condoms -- found no suggestion that early discussions about sex lead to earlier experimentation. Nine studies showed it made the kids wait longer to have sex.
Parents may be uncomfortable taking about it, but kids are going to hear about it anyway, Richardson said. "You may not be going there as a parent, but believe me, their friends are going there and the media is going there. They're hearing about sex. What you want to do is lend your voice to the chorus of the talk about sex."
Just as ancient civilizations believed that their myths were written symbolically in the stars, so is the myth of the Seven-Year Itch.
That myth is symbolized by one of the biggest stars ever -- Marilyn Monroe. It was the title of a movie in which she tempts a man in the seventh year of his marriage toward infidelity.