Liz Hammett is the ultimate wind-up merchant.
The 36-year-old, who is a mother herself, is a pro at sending texts that annoy her poor mum immensely.
Hammett shares the texts on her public Facebook page, which has more than 170,000 followers.
We have to admit, the messages are pretty hilarious. But also a bit evil.
A lot of the time Hammett's mother takes the opportunity to tell her daughter what an "awful child" she is. Or, our personal favourite, "rotten kid".
Once, for example, Hammett messed around with the auto-correct on her mum's phone so that it kept saying "butt" when she tried to type a normal word.
Hammett also makes a habit of refusing to answer her phone so her mum is forced to text her - and inevitably make typos.
But it's okay, because one day Hammett's mum decided to get her own back. Karma's a bitch.
Here's a bonus video of Hammett and her mother in action. The pair need their own TV show.