meaning 'well of course dumbass!'
other phrases like this include grass is green

A very sarcastic way of saying: obviosly.
(Sherlock Holmes was a detective in a classic series of books.)

duh.

what you say when someone says something very obvious.

A phrase often used towards someone who states the obvious.

Stating something obvious, this is a sarcastic way of saying "It's very obvious, you can shut up now."

The victim can follow up with "Fuck you Watson" or similar to defend themselves.

Someone who believes they always have the answers, a know-it-all. Usually used to insult that person when they make a stupid insight or just repeat what has already been said. Sherlock being a reference to the literary detective sherlock Holmes.

one of the three necessary/best word phrases in the U.S. language; fuckhead,piss off