When you are sick of your office and everyone in it. Everything makes you want to scream and everybody gets on your nerves.
Sally: And look at this picture of him in his baseball hat! Isn't it precious?
Dara: It really is.
Nicole (overhearing this conversation in the next cubical): Ugh, ladies, weren't y'all talking about that same photo yesterday, and the day before that and last week? Sorry, I have a bad case of officeitis, just don't mind me.