Pupil: I expect it's around Hadrian's garden miss!
Ask him/her to pronounce unionized
They wear mittens.
Pupil: I dunno! Teacher: But you're reading aloud! Pupil: But I'm not listening!
Pupil: I made it into a paper plane and someone hijacked it.
Those who understand binary, those who don't, and those who weren't expecting a base 3 joke.
When the old one expects you to "do your share"