Shut up Watson Share definition Flag You use this to reply to someone that just said: "No Shit Sherlock" You can use it to troll people ALEX: The Sun Is Yellow Tom: NO Shit Sherlock ALEX: Shut Up Watson Shut up Watson by Flying Donkey July 4, 2014 0 0 Get merch Get the Shut up Watson mug. Buy Now — $32.95 See more merch