A stute. I have been told by The person I am a stute.
My reply was:
Well am not a certified stute, but have studied stutidity in my spare time you know? I was looking to study stupidity but, duh, messed up 1 letter & look what happened. No Look... Actually I just make wild hopeful guesses, but don't mention it to the staff huh?
...using the wrong spanner since 1964...