people, particularly males between the ages between 20 and 30, that camp outside of wal marts or other stores so they can get the copy of Halo 3 before anyone else. usualy has no life except for video games, but there are exceptions. never mind, there aren't.
derived from the roman numerals xxx, meaning both 30 and porn. came around in the 21st century when members of the GPK needed code words to get past their parents. also makes it more comfortable to talk about porn.
While Steve's mom was in the room...
Alex: Hey, dudes, i found some sick ass 30 last night.
Dan: Aww no way. i got grounded from the computer cuz my parents found out about my 30