No Shit Sherlock Share definition Flag Something that someone says when someone else tells that someone something they already new. You need to take the cap off the water bottle before you can drink the water. ("Well no shit Sherlock"). No Shit Sherlock by js_unknown15 December 29, 2021 0 0 Get merch Get the No Shit Sherlock mug. Buy Now — $32.95 See more merch