Generally the players who use the word, overuse it and will call somebody a bad kid about 13 times in one sentence. This can range from jeasouly to just plain stupidity. What motivates them to say it is still a mystery. Scientists believe it makes them feel better that they fail in life. They think they are god's gift to gaming when in all reality, they themselves are the bad kid.
Please see the word Noob if you're looking for a broader meaning of the term.
Player 1: Wow you just betrayed me... You cost us the game!
A derogitory term referring to a younger sibling or friend who does drugs every day, gives older people attitude and has overall strong feelings of teenage angst. Labeling someone a Bad Kid can also have negative effects their self esteem if used frequently enough. Try it!
See:delinquent Ned
"Andrew, you're such a bad kid!"
"Andrew, quit being such a bad kid!"
A person who you meet in a matchmaking game or someone you otherwise don't know. They are bad at games and possibly at life. You usually want to play multiplayer games with a full party of friends. This way you can avoid having to play with randies.