(diplomacy) A formal piece of diplomatic correspondence signed by the representatives of several governments addressed to one or more other governments.

(African-American Vernacular) (It, he, she) is not important; it doesn't matter.

plural of notification area

(idiomatic, humorous) Used to wish someone bad luck.

(graphical user interface) A type of unobtrusive and transient pop-up notification used to inform a user of something.

(Internet slang, rhetorical, sarcastic) Call of attention to something that is ridiculous.

plural of ransom note effect

(design) The unprofessional appearance of a document that uses too many different typefaces.

(colloquial) It's none of my business; indicates that one is not responsible for controlling or changing a volatile or delicate situation.

Not the first time one has been in a particular situation; used to indicate past experience.