rude slang That is or was completely obvious or self-evident. The ironical reference to the famous fictional detective Sherlock Holmes is meant to emphasize that the thing mentioned did not require any great intelligence or deduction to determine or know. A: "I think we need to clear that blockage out of the drain." B: "Yeah, no shit, Sherlock. Thanks for the tip." A: "The front of the car is still sticking out into the street." B: "No shit, Sherlock! I don't have room to back up."

A sarcastic, mocking term of address for someone whom one thinks is or has been particularly unintelligent, imperceptive, or oblivious. A reference to the fictional detective Sherlock Holmes. Often used in the rude slang phrase "no shit, Sherlock." A: "I think there might be a problem with your internet connection." B: "Wow, thanks, Sherlock. Your powers of deduction remain unmatched." A: "We should probably get the boss's approval before we move forward with this." B: "Yeah, no shit, Sherlock."