A mum's letter to her tearaway 13-year-old son warning him to start behaving or face paying the bills has gone viral.
The single mum, who goes by the name Estella Havisham, said her son Aaron seemed to have "forgotten" he was "only 13 and I'm the parent".
She tallies up the costs that he needs to cover, from $430 for rent, $116 for electricity, $21 for internet and $150 for food.
She also instructs Aaron to empty the rubbish, clean his bathroom, make his own meals and clean up around the house.
Offering him a compromise, she says if he would rather be her "child again, instead of roommate, we can renegotiate terms".
It has clearly struck a chord with parents after it gained more than 88,000 likes and 162,000 shares after it was posted on Facebook.


Estella Havisham/Twitter
Warning: The letter

'Estella''s Twitter bio reads: "I am a 33-year-old single mom trying to raise a teenage son."
She says she uses a pseudonym because she is a survivor of domestic abuse.
The author - who reposted the letter on Twitter - admitted later, in a subsequent post, that she had only intended the post to be seen by family and friends when she put it on Facebook.
Speaking afterwards, the mum said she shamed her son to "make a point" and that she wasn't going to actually throw him out. "Nothing comes for free," she wrote.