Response to someone telling you the obvious as if it's not apparent to you, like your a fucking idiot or something .
Condescending prick : "if you don't use your turn signal you could be pulled over by the police and get a citation , then they'll find out you don't have proof of insurance". You: "no duh! Now hold that bong lower ,bitch."
by Jacksonfink January 30, 2019
Get the No duhmug. A marvelously useful syllable that indicates that the statement immediately preceding is blatantly obvious, or that the preceding question has a blatantly obvious answer.
'Will Connecticut Republicans nominate for the Senate a former congressman with a reputation for bipartisanship, or a businesswoman whose claim to fame is building a professional wrestling empire? Duh."
by Jan423 August 9, 2012
Get the Duhmug. 
The earth is flat, DUH!
by CCC2 March 11, 2007
Get the DUHmug. by ashluvssleep April 22, 2016
Get the duh duh duhhhhmug. 
The pussy way of saying the phrase, "No shit."
Often used by twelve year olds around their parents due to the fact that they're not allowed to cuss.
Often used by twelve year olds around their parents due to the fact that they're not allowed to cuss.
Random 12 year old: Guess what! Spiderman shoots spider webs!
Other random 12 year old: No duh.
15 year old: Pussies.
Other random 12 year old: No duh.
15 year old: Pussies.
by Pseudonym Mary June 16, 2009
Get the No Duhmug.