They just couldn't sort things out.
To prove they can focus on two things at once.
Pupil: Well you keep saying that things go in one ear and out the other so I am trying to keep them it all in!
if I'm looking at my phone I now reply, 'No. I am not Twittering,' in a sort of flat monotone. And tweet.
Wife: *shrugs* Me: Why do you find me annoying Wife: *reveals six spreadsheets and a pie chart*