Short for "Knocked Out."
1. The state a bowl, pipe, bubbler, or bong is in after all the marijuana has been smoked out of it. The bowl has been Knocked Out, or Kashed Out. This is the point in which you want to remove remaining ash and pack another bowl.
2. To be in a completely drunken state, where you are unable to function regularly anymore, usually results in passing out.
3. To physically knock someone unconscious. Commonly in fighting, or in Sports such as Hockey, Boxing, Ultimate Fighting, ect.
"Man I think it's K.O.-ed already."
2. (After a night full of drinking)
"Damn that chick over there is K.O.-ed."
3. He got K.O.-ed with the first punch.
2.you koed him with a 32-29 dag spec!
3.lmao he got koed as he spawned