no duh detective Posted in N Best definition no duh detective Nicer way of sayin no shit sherlock. Used commonly at my school by the youngsters. Nerd- Man..i really do suck. I need a LIFE! Kool dude- No duh detective How satisfied are you with the definition? Looking for no duh detective meaning? Delighted that you discovered the greatest determine on our web site! Recently this definition was actually observed 106 times.