A person who is unlikeable, a snitch or a spy pretending to be your friend but is actually trying to get incriminating information about you. In short, a two faced liar
Jerry is snitched on his friends who were about to rob a bank. Jerry is an Oozack.
A person who is generally unlikeable or is a snitch.
Francis lied to his friends. Francis is an Oozack.
Joe snitched on his friends when they were about to rob a bank. Joe is an Oozack