On Wednesday, US President Donald Trump announced a 90-day pause on tariffs. But earlier in the week, on Monday morning, a post on X falsely claimed that "Trump is considering a 90-day pause in tariffs for all countries except China". This false rumour was quickly picked up by major news outlets, including CNBC and Reuters, as US stocks experienced a short-lived trillion-dollar rally. We explain how the rumour began in this edition of Truth or Fake.