Full Ramsay
To have a controlled yet still completely over the top rant about someone or something in public or over social media. Enter a level of debate above and beyond what is called for, whilst still maintaining that you have not lost your temper. Prolonged and often exhaustive debate which the perpetrator will need to seek validation from others afterwards, no matter how incorrect their position.
Someone made a comment about the election and the guy went Full Ramsay on him, still talking about it now.