Bellhead

someone who is absurdly stupid, delusional or uneducated. someone like this gives people around them headaches - quite literally, as the sheer level of stupidity they emit is beyond human comprehension, therefore give nearby humans (who are listening for some reason) a headache.

- "Did you know that they never actually proved how 2+2 is 4? So maybe it actually IS 5?"
- Oh my days, for the love of god! Stop yapping you absolute bellhead!
- "...What? That's not a word."
...

*
- "Remember that guy from college? The stupid one?"
- Yeah, he was a total bellhead. Didn't know shit.
- "Right."
...