What's your biggest workplace pet peeve?

A row of cubicles in the workplace.
A row of cubicles in the workplace.
Michael Lokner/Flickr (cc by-nc-nd)

If you get annoyed with your coworkers or classmates sometimes, you're not alone. We've pretty much all been there. 

Expired food crowding the fridge. Too-strong cologne assaulting your nostrils. An inability to put down one's cell phone during class or meetings. What's your biggest pet peeve? 

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