That reminds me of an experience at a ceili last Whitby in the Spa. We are both experienced, adult, regular ceili dancers, but were made to feel stupid by the caller because we didn't pick up immediately on a term the caller used for a move in the dance. A few terms he used we hadn't heard before, but we were trying!
We coped- largely because the other dancers were supportive- but we had the feeling that they all felt intimidated by the manner of the caller.
It certainly put us off going to any more dances run by that particular caller- how does he get away with it?