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1.
This word is used to describe a girl who takes being a bitch to a whole new level. Although the regular word to describe this kind of girl is "megabitch," this particular girl is the leader of a group of bitches (who can be referred to as bitchcepticons.) The word is derived from the words "megatron" (the leader of the the decepticons in transformers), and "megabitch."
Guy: "Oh that girl is such a bitch, and it's only because she has a big ass!"

Girl: "I know! She's a megabitchron! I hate her and her bitchcepticons!"
by Thegodwatcher October 07, 2010