Otherwise known as "otchling", is something you shout into the microphone over Xbox live or any other gaming communication system to confuse the hell out of the other players.
A word used to describe someone extremely stupid.
Sam: "Way to go otch, now were screwed."
Player: "Stupid otch just took the banshee"
For example, it can simply mean "penis".
"Man, that guy tried to cut off my otch!"
Or any sort of genitalia or act depending on context and word combinations.
"Good otch. ;)"