Re: To Dance or Not To Dance…?
He’s not banging his head. He’s telling you, he thinks you’re a moron and it’s pointless trying to explain his superior logic to you. These are the other ways he communicates the same feelings → 
and 
The rest of us are well versed in diwana smiley communications, ergo my providing the translation services.
P.S. That’s not my opinion of you - I don’t know you well enough to have an opinion. I’m just explaining diwana-speak to the uninitiated.