Brian: That's sounds like a very dot nose situation to me.
Brian: Oh, I'm just saying that it's extremely obvious what you should do if you can't find the definition of a word.
or written all over your face.
Also when something is very obvious to the surrounding people while that person is oblivious, that person can be called a dotnose.
This word is also VERY offensive to black people.
"You're being a real dotnose John"