The entire theme song qualifies as one due to its spread from SiIvaGunner, but several lines of the theme stand out as well:
IT'S. THE. NUTSHACK.note The theme song uses this line about sixteen times, meaning half the song consists of "It's the Nutshack" repeated over and over.
TITO DICK "DICKMAN", BABY!note Often paired with "He raised Phil and loves the ladies!", the line that comes afterward.
Another meme is that when this line is reached, the video may repeat "Dick," over and over while zooming into Tito Dick's face and/or crotch, which is often spherized and plays "DICKMAN, BABY!" loudly. Sometimes, it undoes the primary edit that the video has, often for a Jump Scare or as Sensory Abuse.
CHITA MEET DA FREAKA DA WEEKA!
BUT THAT'S NOT HAPPENIN' NEITHER. SHAKE IT LIKE A SEIZURE.note The rapper says that Jack will not keep Chita, and then shakes it.
I got grapes, what you watchin', son?note The rapper in the theme song randomly shows he has a handful of grapes and then raps this line.
PHIL'S FROM THE 'SCO, JACK'S FROM THE P.I.note The line that signals the beginning of the character introduction rap, which is commonly misheard by listeners.
PHIL'S FROM THE SCONE, JACK'S FROM THE PIER! HORATIO OR HORAT SO BEER!
IT'S note Just this one word is enough to make one think of the Nutshack. If there's another instance of the word "It's" in another context, expect whatever follows to be replaced with "the Nutshack."
"The Nutshack theme but…"note Every use of the word "Nutshack" (or alternatively, every noun) is replaced by the entirety of a different video — most often one that stretches into the hours. There's even one that is 32 hours long. It's also happened in reverse, with other videos having nouns replaced with the entirety of The Nutshack theme. This isn't always the case, sometimes there are different modifications put on the video, but this is the most common.
"The Nutshack theme but every time "Nutshack" is said it's replaced with X"
Stupid hack.note Taken from a video where the lyrics to the theme song are put into Google Translate and bounced back and forth between different languages, resulting in garbled Engrish.
No one asks you to save virgin college.note See above.
It is in fact The Peanut House.note Another video from the same creator as the Google Translator video, the song is rewritten in a verbose form, which means everything is described in more words than needed, to hilarious results.
This general vicinity we live in has been nicknamed The Nutshack.note Similar to "The Nutshack but verbose" video, but here it's written in a "posh and elegant" form.
It is in fact the place in which homo sapiens inhabit based around fruits consisting or a hard or tough shell around an edible kernel.note The Nutshack but verbose but verbose
It's the Nutcracker! note A video from a Russian creator where the theme song is heavily modified (and censored) to make it a 4Kids version.
"I AM DICK! I AM THE LEADER OF ALL OF THESE IDIOTS!" note A video titled "God Himself" features Tito Dick putting on his attire and uttering this line. The video exploded in popularity after being offhandedly mentioned by a popular YouTuber.
"As Nebble say, brontosaurus!" note During the "Behind the Scenes" feature on The Nutshack DVD, Jesse Hernandez randomly says this when discussing the show. Popularized thanks to Ralph Sepe.
qualifies as one due to its spread from SiIvaGunner, but several lines of the theme stand out as well: