This is FRESH AIR. We all know the Internet can be an ugly place, but what happens when you discover you're part of the problem? Writer Sarah Hepola is going to tell us about her own social media mistake.

SARAH HEPOLA, BYLINE: I was feeling cheeky one afternoon when I posted to Facebook that the '90s hit "Breakfast At Tiffany's" was the worst song of all time. It had been nearly two decades since the release of that single about a bickering couple who reconciled thanks to an Audrey Hepburn film, but I heard the chorus in passing that day and it got stuck on this crazy-making loop in my brain.

From the reaction to my post, I could see I wasn't the only one who still held a grudge against a harmless '90s earworm. My friends piled on, creating a delightful little bonfire of disdain. But I had forgotten one detail - a guy from the band was in my friend circle. That was unfortunate.

I didn't know him very well. He lived in Dallas like I did, and I'd met him years ago when I was the music editor for an alternative paper. He was something of a local hero, having turned that one-hit wonder into an indie record label, and he was known for being a good guy. All important details I remembered roughly 45 minutes after hitting the post button.

For years, I've complained about the random hatred of the Internet. It was the worst part of writing online. Show up with your heart in your hand, and a bunch of strangers line up to throw rocks in your face. I was so freaked out by comments on my own stories that I'd once considered not writing at all anymore.

I badly wanted a thicker skin, but I also knew I'd become a writer because I was thin-skinned. I took on other people's discomfort, and I flinched at the tiniest finger flick of rejection. I was a sensitive person, but I had just done a very insensitive thing.

I would never have said this to his face, but technology is such a bait and switch, giving you the feeling of anonymity at the very moment your words have the farthest reach. And my comment was exactly the kind of random stone-throwing that had wounded me over the years - boo, you suck. Go away.

I had done this - why? For a tiny dopamine hit? For a few people to think for 20 seconds that I was clever? I should've just deleted the post. I can't tell you why I didn't do that except I worried that deleting the post would draw more attention to the mistake.

I was starting to shame spiral. I alternated between how could I do this and was it really that big of a deal? Maybe he doesn't check Facebook. Maybe he wouldn't even notice. Facebook is such a swift-moving stream of drunken selfies and political outrage and adorable videos of baby elephants, and what were the chances this one guy would see this one dumb little post?

He did, of course. And he left a comment, although he didn't sound angry so much as disappointed, like he'd thought I was a nice person. And I am a nice person, although I sometimes do not-nice things. I've long felt torn between the opinionated crank who wants to sneer at the world and the good little girl afraid to hurt anyone's feelings.

I went to a comedy show that night, but I didn't laugh much. At one point, I excused myself to go to the restroom, but I sat in the lobby instead. I'd deleted the post by now, but I still wanted to explain myself. And what was my excuse? In the past, I had reached out to people who wrote nasty comments on my stories and they often said the same thing - I didn't think you would read that.

I was embarrassed to find myself in the same place. I'd spent all those years complaining that people on the Internet could be such bullies. I'd forgotten that people on the Internet included me.

I wrote him a message. It was short and imperfect. All I can say is 20 years after that song came out, people are still talking about it, I said. Also, I'm an idiot. He didn't respond, but he also didn't unfriend me, which I thought showed a nice restraint.

We hear a lot about how social media lets us present our glossy, perfect selves, but use social media enough and it will put you directly in touch with your own mistakes - some clumsy opinion, some joke you wish you could take back. We can all be thoughtless, we can all be cruel, which is good to remember the next time you find yourself on the receiving end of that random scorn.

I wish people would be more civil online. I wish they'd be more civil off-line, for that matter. But the messy human-ness of the Internet is part of what makes it so endlessly fascinating. I don't think the mass of humanity will ever stop throwing rocks, but I'm trying to be a little smarter about when I chuck mine.

GROSS: Sarah Hepola is the author of The New York Times best-selling memoir "Blackout: Remembering The Things I Drank To Forget." She lives in Dallas.

(SOUNDBITE OF SONG, "BREAKFAST AT TIFFANY'S")

DEEP BLUE SOMETHING: (Singing) And I said, what about "Breakfast At Tiffany's"? She said, I think I remember the film. And as I recall, I think we both kind of liked it. And I said, well, that's the one thing we've got.

GROSS: On the next FRESH AIR...

(SOUNDBITE OF TV SHOW, "VINYL")

RAY ROMANO: (As Zak Yankovich) I'm not a salesman, I'm a record man.

UNIDENTIFIED ACTOR: (As character) I know that.

ROMANO: (As Zak Yankovich) Don't come in here, tell me to double down.

GROSS: ...My guest will be actor, writer and comic Ray Romano. He co-stars as a record executive on the HBO series "Vinyl," which was co-created by Martin Scorsese and Mick Jagger. Romano starred in the popular sitcom "Everybody Loves Raymond." I hope you'll join us.

FRESH AIR's executive producer is Danny Miller. Our interviews and reviews are produced and edited by Amy Salit, Phyllis Myers, Ann Marie Baldonado, Sam Briger, Lauren Krenzel, John Sheehan, Heidi Saman, Therese Madden and Thea Chaloner. I'm Terry Gross.

(SOUNDBITE OF SONG, "BREAKFAST AT TIFFANY'S")

DEEP BLUE SOMETHING: (Singing) And I said, what about "Breakfast At Tiffany's?" She said, I think I remember the film. And as I recall, I think we both kind of liked it. And I said, well, that's the one thing we've got.