i feel my whole body tense up shake my head or just cringe aggressively it is shameful when you do it and people is around but it is inevitable at least it is for me  it is difficult to describe the feeling to someone without ocd i always compare it as to when you drop something and your reflexes kick in in order to catch the object you don’t think about catching the object you just go for it having an intrusive thought is like having that reflex but hold in it in at the very last moment to keep you from doing or saying something who wouldn’t react physically to such experience and the idea of being that close to do what you had in mind