Palindromes are words or sentences that read the same backwards as they do forwards — a symmetrical collection of letters.

Composing a palindrome is no easy feat, which is why you don’t see them all too often. The longer they are, the harder they are to write. Some are funny, others are rude. Here are a few prime examples that might hurt your brain.

Racecar

One word, seven letters

The classic, one-word palindrome appreciated by NASCAR fans everywhere.

Dammit, I’m mad

Three words, 11 letters

This is one of the internet’s favorite palindromes. A pure expression of frustration, whichever way you look at it.

Never odd or even

Four words, 14 letters

Another classic — implausible both in meaning and existence.

Satan oscillate my metallic sonatas

Five words, 31 letters

An abstract request for the devil himself. Are metallic sonatas a metaphor? Is the speaker referring to the oscillations of the sonatas’ soundwaves? We may never know.

Marge lets Norah see Sharon’s telegram

Six words, 31 letters

Marge is betraying Sharon but letting Norah get in on all the gossip.

Doc, note: I dissent. A fast never prevents a fatness. I diet on cod.

Fourteen words, 52 letters

Interesting dietary advice from a patient who has taken nutrition into their own hands.

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.

Sixty-three words, 263 letters

Sounds like a good party! This is simply a list of names of people who have sinned, but it is in fact a palindrome.