When you're disciplining your little ones, it's hard to avoid getting caught up in the heat of the moment when they argue back.
But this letter written by a nine-year-old shows that kids can take passing comments to heart - even if we really don't mean them.
The Unmumsy Mum received the letter from another parent and posted it on her Facebook page , where she explained that Ellie and her mum got into a fight when she refused to tidy her room.
Ellie had declared she wanted to be sold on eBay (because she didn't want to be part of the family) and, in the heat of the moment, her mum had said that 'nobody would buy her'.
Then, Ellie wrote this letter to her mum: