A person who is full of crap, lazy, and mocks everything by using irony, sarcasm, manipulation and/or outright lies as a way of life.
Student 1: Tom's a mockerizer!
Student 2: Why, what did he do this time?
Student 1: The dude was standing on his desk in class jumping up and down screaming that his dog ate his homework.
Student 2: You hit the nail on the head! He doesn't even have a dog! Definitely a freakin mockerizer!
I dont know who uses the word moked referring to drugs. getting moked means your getting done foul. if you got jumped real bad are aired out (shot up) they'd say you got moked out.
Perfect example, in the words of the late, great, notorious Biggie Smalls: "the nigga just got moked out like that, man" (Biggie Smalls - "MISS U")