I think nobody is ready for most morbid intrusive thought..! territory because it's just horrible.
I do not think of it even as an intrusive thought but literally the gibbering of demons, lol. But I suppose we could distinguish between random crazy thought involving violence or lust and recurring thought that seems plausible to you that is also morbid, but that also feels like cheating...
But if the game is literally reveal the insanity that the god of evil & darkness has whispered to you, lol, IDK, that's better if everyone present has drank a lot of booze and the drunkest person has broken the ice with something so insane that can't be topped.