Naam
Naam sayn is like asking if your brain works. It's what you say when someone's talking nonsense.
He said, 'I think I'm a superhero.' I said, 'Naam sayn?'
She said, 'I can read your mind.' I said, 'Naam sayn?'
He said, 'I'm going to marry a chicken.' I said, 'Naam sayn?'