The world's a quickly changing place. I mean, 10 years ago, you wouldn't even have been able to share this post on Twitter.

But even as transportation, communication and entertainment change dramatically, one thing remains the same: Adults give teenagers questionable dating advice. In fact, how adults have attempted to "reach the youth" is so painfully awkward that it will actually make you appreciate your awful, uncomfortable sex ed class.

1. On "slowing things down":

Here are 10 pieces of retro dating advice you should definitely not follow:

Gumdrops: the world's oldest and most effective birth control, apparently.

You can openly prefer them after you dump your annoying brunette girlfriend, obvs.

In the '50s, advice columnist Ann Landers warned:

"When necking becomes the major interest and the No.1 indoor sport, you're playing with fire and you could get badly singed."

Usually, Landers said, "The trouble would start in a parked car" at a local "passion pit," a.k.a. the drive-in movie theater.

Leave room for God between those necks, guys.

Is she a "teaser," or just a friendly klutz?

Naturally, what kind of "desperate measures"??

This is the '50s version of being "The Cool Girl," FYI.

Here's a sample exchange meant to show the art of the conversation:

"He--'It's a grand night, isn't it?'
She--'Wonderful. Did you ever see such a moon?'
He--'Isn't that what they call a Harvest Moon, or is it the Hunter's Moon?'
She--'Hunters' Moon? That sounds interesting. Do you hunt?'"

-- "Facts of Life and Love for Teenagers," 1950.

So long as the dude actually hunts, this conversation is off to a very promising -- and not at all stilted -- start.

"Don't offend his eardrums by humming while dancing."
-- " Facts of Life and Love for Teenagers," 1950

He was really into her until he found out she hums. :(

10. On when it's OK for you to call him (Hint: NEVER): "Don't telephone a boy, even if he asks you to. This is sure 'social suicide.'"
-- A 1960sWendy Ward's Charm School advice book

Just to be safe, attentively assume she's afraid of everything. She'll find it very reassuring and not at all annoying.

He was testing you, and you failed. Congrats.

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Suddenly, your mom's advice to "tell him how you really feel" doesn't seem so lame, right?