Famous instances (such as the Rick Roll during the Thanksgiving parade).
Further mutations and successor memes, if any.
Interrupting Kanye: Used to interrupt something, typically another meme, in the form "Yo, [X], I'm really happy for you and I'mma let you finish, but [Y] had one of the best [Z] of all time!"
Original source was West's interruption of Taylor Swift's speech at the 2009 MTV Video Music Awards; she had just won "Best Female Video", and West claimed that Beyonce had one of the best music videos of all time. Overnight, this was all over the internet, thanks to Twitter. Beyonce went on to win Best Video, and allowed Swift to return to the stage and finish her speech.
Most famous instance: The original (Kanye enters at 0:26). The meme is literally his entire interruption.
The verse "where the fuck is Kanye when you need him?" was used in the Eminem song No Love along with "bitch, imma let you finish".
"George Bush does not care about black people!" - "George Bush" and "black" are often replaced by other words.
Original source was a celebrity telethon to raise money for victims of Hurricane Katrina.
Kanye complaining in all caps: Several quotes from his blog in which he ranted in all caps, including "AT THAT POINT WE’RE RACING AGAINST THE SUN!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!" and "WHY WON'T YOU LET ME BE GREAT!"
Source: After his massively delayed performance at the Bonnaroo Arts & Music Festival, Kanye wrote an angry blog post (which has since been taken down, but excerpts can be found here. The fallout made it to fandom wank.
With the release of his album My Beautiful Dark Twisted Fantasy, a whole miniature subculture of memes have grown based around the 35 minute movie Runaway, the◊ interchangeable◊ album◊ covers◊, and lyrics.
Further lyrical memes have sprouted from the album Yeezus. Kanye wrote half of the album's lyrics in two hours before getting on a plane to Milan two days before the album was due to the label. It definitely shows.
IN A FRENCH-ASS RESTAURANT / HURRY UP WITH MY DAMN CROISSANTS!
B-B-B-B-BOUNDDDDDDDDDDDDDDD TO FALL IIIIN LOOOOOOOOOVE / UH HUH HONEY
JEROME'S IN THE HOUSE. WATCH YA MOUTH.
HAVE YOU EVER ASKED YOUR CHICK FOR MORE CHICKENS* From the live performance of Bound 2 on Jimmy Fallon. Also features Charlie Wilson frequently yelling SHABADABA TWEET-TWEET-TWEET
PUT MY FIST IN HER LIKE A CIVIL RIGHTS SIGN
EATIN' ASIAN PUSSY ALL I NEED IS SWEET N SOUR SAUCE
KEEP IT THREE HUNDRED / LIKE THE ROMANS
Since the release of Yeezus, Kanye became much more active in interviews and the media, for better or for worse.
EVERYTHING IS PUSHA T. EVERYTHING IS PUSHA T
YOU AIN'T GOT THE ANSWERS SWAY. YOU AIN'T GOT THE ANSWERS
The music video for "Bound 2" became completely ripe for parodying, most notably from Seth Rogen and James Franco.