Aren’t you getting a little old to talk like a Valley Girl?
Oh, my gosh. Low blow. ‘Duh’ is an accepted part of the language. It says so much.
Instead of saying, ‘that statement is so ridiculous it makes me want to stick a fork in my neck, or maybe your neck, you can just say ‘duh.’
Pretty much says it all.
Now that you asked, No, I’m not, stupida!