Another phrase originating from greensprings school, used in a similar manner to wait no telling. It is used to express disinterest in what someone is telling you about. And insinuating that their mother would be more amused by what they have to say than anyone else.
"Don't tell me what to do!" Cries out the stereotypical teenager at his parents.
"You dumb fuck!" says his father "You just told ME what to do, You fucking hypocrite!"
Runs after him with a blade and cuts him up to little pieces.
Arrr! Murder, yeah!