I Can Fly is a SimpleFlips meme originating from the Super Mario 64 romhack Shrek 64, in which Mario is replaced by Donkey. Mario's "Yahoo!" sound effect used during long jumps is replaced with a sound byte of Donkey saying "I can fly!"

The joke became popular due to its frequency in the Shrek 64 stream. Additionally, as the same stream was still going, AutisticYui gave a song donation of 1, 2 Oatmeal with the lyrics replaced with I Can Fly, somehow managing to create and upload a remix in around 20 minutes.
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