"I heard one of the perps got flatlined by the cops at that liquor store robbery last night."
(1) Describing anything that is uneventful, monotonous, boring, very ordinary.
(2) A pointless encounter. The basics of living with nothing more to excite/stimulate the mind and/or body.
B: Dude, it fucking sucked, no beer, no fights, no girls, that party was flatline.
2. To kill someone, literally or figuartively.
3. To be retarded, metally challenged, stupid, dimwit, and/or dumb.
4. A game where people choke themselves to get the feeling equivalent to be high. Therefore, legally high. Also known at the Choking Game and Space Monkey(s).
2. a) The marine flatlined the Iraqi terrorist.
b) "I'll flatline you if you tell my mom I got a 46 on my math test!"
3. "Did you just figure out that water is wet? Wow Flatline, you're a few fries short of a Happy Meal.
4. A lot of kids accidently kill themselves trying to get high while playing Flatline