It's another week,Watch Up To And Including Her Limits Online folks, and that can only mean one thing — a fresh new chapter in the ongoing Twitter saga that is J.K. Rowling vs. Donald Trump.

This time, the topic in question was a current favourite of the president's: fake news.

SEE ALSO: This may be the most brutal J.K. Rowling comeback of all time

On Monday, he went on one of his typical early morning Twitter tirades, this time attacking "negative polls" regarding his attempts to implement a travel ban.

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Rowling's response was as swift and savage as ever.

This time — as well as the usual support from fans — she also received some well-timed back-up from Ricky Gervais.

Soon, the mirror jokes had started.

When it comes to Twitter, J.K. Rowling is an unstoppable force.

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