A really annoying video and website of an 8-bit cat shooting rainbows from its backside, while repetitive music with the lyrics of "nyan nyan nyan nyan"
by WuutWuutJaella June 15, 2011
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Nyan cat is a youtube phenomenon where a cat with a poptart body sings nyan for like 4 minuts.
have you seen that nyan cat video?
yeah the one with a poptart cat singing nyan a million time?
by playfreak April 27, 2011
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A viral video, a meme... It consists of a flying pastry cat and rainbows coming out from "behind".

The song is a random Japanese song... Some people make parodies, such as American Nyan Cat (and play music that fits)...

Tacnayn is the "enemy" of Nyan Cat... The opposite. It's a black waffle cat. The Nyan Cat music is played but only backwards.

It is a viral video and several people have made 3 - 24 hour versions.

NYAN NYAN NYAN!
Jacob listened to Nyan Cat today. He wanted to know why it's cool and why everyone in his school is talking about it.

JACOB: Why is my internet so slow?
SONG STARTS: NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN!
JACOB: Epic!

The next day... Jacob went to school...

TEACHER: Ummm... Jacob! Why don't you tell the class what you got for number 4?
JACOB: Nyan nyan nyan?
**class laughs
TEACHER: Huh? Please just explain how you got number four and what you got!
JACOB: NYAN!?
TEACHER: This is not a joke! >:(

Explanation: Nyan Cat made Jacob crazy as f*ck.
by Lichens August 30, 2011
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A disturbingly enthusiastic and adorable Poptart cat that shoots rainbows out of its ass while continually singing a very obnoxious but addicting song. NYAN NYAN NYAN NYAN NYAN NYAN ALL DAY LONG! Has been know to treat certain types of madness and increase hormonal levels in people under the age of 10.
Ex: www.nyan.cat
"I was able to watch that Nyan Cat video for 5 Hours, and now have a considerable amount of brain damage!"
by NYANNEONFVR June 2, 2011
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An youtube sensation that symbolizes gay anal sex, ie shooting a rainbow out of its ass.
NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN CAT
by fuckfuckfuckfuckmofucka July 31, 2011
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A Pusheen cat with the body of a pop tart That shits out rainbows out of its ass and sings the Nyan song for hours while flying in space.
Nyan Cat! NYAN! NYAN! NYAN! NYAN! NYAN! NYAN! NYAN! NYAN! NYAN! NYAN! NYAN! NYAN! NYAN! NYAN! NYAN! NYAN! NYAN! NYAN! NYAN! NYAN! NYAN! NYAN! NYAN! NYAN! NYAN! CAAAAAAAAAAAAAAT!!
by This is how my shit is October 13, 2020
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Listening to the nyan cat song for long periods of time with no interuption to see who can listen the longest.
Daniel, Troy, and Dakota were up all night Nyan Cat-ing.
by D. DeWayne June 2, 2011
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