a cat wearing a blue onesie playing a tune on the piano. it usually comes after a video of somebody or thing failing, or epic failing
dude! that spider-man wannabe just got owned by piano cat!
by cherypi May 22, 2010
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Can we all remember arguably the greatest meme of all time? Piano Cat was Earth's heart and soul, and no I dont wanna hear about "actually, tetonic plat-" THEYRE NOT! Piano Cat is THE meme. Please give a round of plause for Piano Cat. Rest in peace.
Random dude: hey did you hear piano cat di-
Everyone: SHUT UP YOU PIECE OF SH*T! (Rip piano cat)
by Piano Cat October 19, 2019
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Jeffy* plays the cat piano* MEOW MEOW MEOW MEOW MEOW MEOW MEOW MEOW MEOW MEOW MEOW MEOW MEOW MEOW

Mario: JEFFY STOP IT!

Jeffy: MEOW

Mario: THAT'S IT JEFFY YOU'RE GROUNDED!
by Rotten Turkey April 24, 2021
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