A phrase mostly used on internet forums such as 4chan when a major celebrety (usually a black male) "dies". This is not usually the case, and usually it is used to trick people into thinking that said person has died. (A corresponding picture will most likely accompany a non-matching name.)
The phrase takes its origin from The Big Lebowski, a 1998 movie starring Jeff Bridges and John Goodman, whose character (Walter) utters the phrase as Steve Buscemi's character's (Donny) ashes are spread into the ocean.
someone posted that will smith died, but his pic said eddie murphy! oh, that's a goodnight, sweet prince.
Goodnight Nurse is the best Punk-Rock band in the universe. Blink-182 invented true Punk-Rock and now Goodnight Nurse is bringing it back. Not many people people know about them which is ridiculous because they are beyond cool, which makes a word sounding somewhat like awetubecoolsometacular.
Guy 1: Dude, have you heard that awetubecoolsometacular bandgoodnightNurse?
Tweeting goodnight is the lamest form of begging for attention. Suffice to say, that nobody that is on Twitter at the time to see your "tweet goodnights" gives a damn that you are about to go to bed. A tweet goodnight is what someone who doesn't have someone to tell or to "text goodnight" does to make them feel important.
"Well Twitter, I've watched all the YouTube I can for one night. Guess, I'll see ya tomorrow. G'Nite! # tweet goodnight #urbandictionary"
When the host of a party starts screaming and throwing all the coats at the guests to get them to leave. Coined by Tina Fey in _Bossypants_, it should not be confused with an irish goodbye.
Yet another sound of breaking glass led my wife to immediately break up the party with an irishgoodnight.