Pupil: I expect it's around Hadrian's garden miss!
They'll tell you
Someone told me but I forgot.
Pupil: Up and down or across Teacher: What do you mean Pupil: Well up and down makes a 3 or across the middle leaves a 0!
Pupil: Well if I could there wouldn't be much point in me being here!
Those who understand binary, those who don't, and those who weren't expecting a base 3 joke.
He was expecting showers.