This made me laugh out loud on the bus the other morning.

I had suffered a hot and bothered exchange in my first French lesson, for example, when I was told that the French for ‘Oh’ was ‘Ah!’
‘Then how do they say “Oh”, sir?’
‘They say “Ah.” ‘
‘Well then, how do they say “Ah”?’
‘Don’t be stupid, Fry.’

p.9, from: