A palindrome is a word or phrase that can be read the same way forward and backwards. Think "taco cat" or "race car."
We've all heard those simple ones, but things get so much more complicated than that? We didn't. At least until Reddit user LordOfTheBored asked:
What's the coolest palindrome you know?
We're not going to spoil things for you, but we will say things get so much more advanced than racecar that it's not even funny. You want poems, you got poems. You want a naughty list, you got it. You want palindromes that work forwards, backwards, up and down? Yup, you got that too!
Prepare for palindrome paradise, fam!
Cruel Irony
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Aibohphobia
It's actually the term for a fear of palindromes, which is both mean and hilarious.
- -eDgAR-
Poetry
"Dammit I'm Mad" by Demetri Martin
Dammit I'm mad. Evil is a deed as I live. God, am I reviled? I rise, my bed on a sun, I melt. To be not one man emanating is sad. I piss. Alas, it is so late. Who stops to help? Man, it is hot. I'm in it. I tell. I am not a devil. I level "Mad Dog". Ah, say burning is, as a deified gulp, In my halo of a mired rum tin. I erase many men. Oh, to be man, a sin. Is evil in a clam? In a trap? No. It is open. On it I was stuck. Rats peed on hope. Elsewhere dips a web. Be still if I fill its ebb. Ew, a spider… eh? We sleep. Oh no! Deep, stark cuts saw it in one position. Part animal, can I live? Sin is a name. Both, one… my names are in it. Murder? I'm a fool. A hymn I plug, deified as a sign in ruby ash, A Goddam level I lived at. On mail let it in. I'm it. Oh, sit in ample hot spots. Oh wet! A loss it is alas (sip). I'd assign it a name. Name not one bottle minus an ode by me: "Sir, I deliver. I'm a dog" Evil is a deed as I live. Dammit I'm mad.
Latin Vibes
In girum imus nocte et consumimur igni.
Latin for: "We wander around at night and are consumed by fire."
- Lofteed
Get The Joke?
A go to joke of mine is: ask me if I like palindromes.
Ok. Do you like palindromes?
Not a ton.
Username Checks Out
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I don't know about the "coolest", but I've had this username for 9 years now.
Sinners
Dennis, Nell, Edna, Leon, Nedra, Anita, Rolf, Nora, Alice, Carol, Leo, Jane, Reed, Dena, Dale, Basil, Rae, Penny, Lana, Dave, Denny, Lena, Ida, Bernadette, Ben, Ray, Lila, Nina, Jo, Ira, Mara, Sara, Mario, Jan, Ina, Lily, Arne, Bette, Dan, Reba, Diane, Lynn, Ed, Eva, Dana, Lynne, Pearl, Isabel, Ada, Ned, Dee, Rena, Joel, Lora, Cecil, Aaron, Flora, Tina, Arden, Noel, and Ellen sinned.
- J997777
That French Confidence
A very cool French palindrome. "Engage le jeu que je le gagne." It means, "Start the game so I can win it."
- Mark3t
The Perfect Palindrome
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The Sator square (2D Palindrome):
S A T O R
A R E P O
T E N E T
O P E R A
R O T A S
It's Latin for "Farmer Arepo has work wheels" and can be read from left to right, right to left, top to bottom, or bottom to top. The perfect palindrome.
@TweetforAnnaNAFO/X
Steve Urkel Oops GIF 
Moon Walk Dance GIF 
The Office Monday GIF by 20th Century Fox Home Entertainment