Office Pet Peeve #982

When a coworker enters your office to deliver a piece of mail, document, fax, requested item, [fill in blank of inconsequential office work-related item here], etc. and while you are busily typing up a storm or talking on the phone or picking at your cuticles or whatever they stand there holding said item out to you--their hand literally hovering over your tray clearly marked INBOX--and wait for you to stop what you're doing to physically reach out and take it from them and drop it into your own inbox. Grrr, arg.