person A: There is a coworker sitting next to me that he is making noise with his pen the whole day long. It is disturbing me from my work.
person B: That's got to be annoying! Have you tried telling him to stop?
person A: I already told him but he said he can't concentrate without having something in his hands.
person B: Maybe he should take up knitting--or something else that would be a bit more quiet.