look up any word, like bukkake:

1 definition by Altered Reality

 
1.
An expression originated from the 1982 hit "1999" by Prince, it was originally used to mean "to have the wildest party of your life", like you would if you were to celebrate the opening of a new millennium.
It became obsolete after 1999, so, if now you express your intentions to "party like it's 1999", people will believe you want to celebrate by listening to music like "La Flaca" and "Mambo Number 5", cracking jokes about Monica Lewinsky, playing with a Playstation 1 and talking about The Matrix like "OMG TEH BEST MOVIE EVAR!!!111"
Before 1999:
Joe: Come on, dude, let's party like it's 1999!
Bob: Yeahhh!!!

In 1999:
Joe: Come on, dude, let's party like it's 1999!
Bob: WTF? It IS 1999!

After 1999:
Joe: Come on, dude, let's party like it's 1999!
Bob: Nah, I'm not into this nostalgia stuff.
by Altered Reality March 02, 2010