Monster Kid 

A person, usually white, who walks up says a few well spoken phrases stands and leaves. Usually they are adorned with a Monster shirt, baggy skinny jeans, hat turned sideways, and a big pimp ring.

Monster Kid: "Wa's goo'?"
Us: "What?"
Monster Kid: "Yo, why ya nah at da fue?"
Us: "....What?"
Monster Kid: "I'm in miami, bitch."
Us: "Seriously, wtf?"

Ten min later

Monster Kid: "Yo I betta go." (leaves)
Me: "Did anyone know he was standing there?"
Everyone else: "No."
Me: "Oh cool, hey lets go ruin a dodgeball tourney for kids."
Matt: "Hell yeah!"

Monster Kid by Navigator of the Sea March 21, 2010

Monster kid 

A under category of nerds/geeks.

The Monster kids is a person who know's everything about either horror movies, urban legends/ghost stories, classic monsters or/ and other horror related stuff (most of the time its all of that stuff) He's room is probably filled with scary masks and other horror related stuff.
Also the Monster kid is usually an outcast

The Monster kid knows the rule's on how to survive in a horror movie but would probably never survive in a horror movie.

Randy from scream (1996) is probably the most popular Monster kid in media

Even tho he isnt the only monster kid in the scream franchise

Most horror movie's about teenager have a monster kid character

Person a : "The Monster kid is my favorite type of fictonal character"

Person b " yeah because your one of them"

Monster kid by The swag cat December 26, 2022

monsterkill 

Sound played in Online Games such as UT and CS.

Or you got killed by a monster.

In UT when the sound plays Monsterkill!!! nothing happens.

IN CS when the sound plays
Monsterkill!!! it says Kicked by Console.

monsterkill by A maroon clored hair girl January 8, 2004