The modern definition refers to someone who has "Non-Present Consciousness"
The original definition means "Non-Player Character" about video game characters the player doesn't control.
Tiffany: Joey keeps talking to those girls and it's obvious they are not into him.
Grant: Yeah he's for sure an NPC right now
An alternate form of the word colloquialism that is spoken by people who are physically unable to pronounce the word colloquialism.
Guy: Hey, try saying colloquialism.
Girl: What?
Guy: Colloquialism!
Girl: ... Colloq.....colloqel... colloqluilisfuck.