Habit Conversion
You normally talk like a robot repeating the same lines, but something ridiculous interrupts you and you forget what you were going to say. Most of the time, the ridiculous thing was just a weird coincidence.
I was about to say 'I’m going to win this game!' but my friend sneezed and it echoed like a monster.
I was going to say 'I don’t need help!' but my kid dropped a plate on the floor.
I was about to say 'That was the best meal ever!' but my phone rang and it was my ex.