A macro Meme consisting of the caption "Hold up... Let him cook", in response to someone doing something that is highly unusual, yet intriguing enough for the one who witness it that they let them continue.
Popularized by a Screenshot from Kingdom Hearts III in which Sheriff Woody walks past Sora (Kingdom Hearts) and gives a speech to Xehanort (Kingdom Hearts). The line is believed to originate from a Lil' B song.