This is a combination of the words 'bitch' and it's derivative, 'beotch'.
In order to experience the full effect of its usage, the user should deliver it as if he or she is a chicken. Careful timing between its two syllables makes its application broad and effective.
This word is exceptional when pwning n00bs and is particularly effective when applied simultaneously with a tea bagging motion.
Like a chicken: Bitch-otch! Bitch-otch!
I just owned that bitchotch.
Ooooohhhhhh! Bitchotch! (tea bag)