The phrase "ratchet bitch" refers to a ill-mannered female that likes to make a mountain out of a molehill by ratcheting things up.
That ratchet bitch is always getting shit started.
by Cle Jons June 23, 2014
Noun (rat-chet) A ratchet is used for one thing. Getting a nut off.
by Majorwood June 16, 2013