I was having a discussion with a buddy last night on intrusive thoughts that pop into our heads for no reason other than our brains messing with us. I told him about one when I visited the Hoover Dam. I thought to myself, "I could just jump over the side of this thing right now. It would be so easy." Other thoughts that came out of our discussion included: "I should just go up to that old lady and scream in her face." "I'm going take a shit on my bosses desk at work and let her find it." EDIT: Apparently there's also a subreddit for it, some gems from there: "Im having such a nice conversation with this random old man at the bus stop. I wonder what would happen if I forcibly french kissed him?" "This guy is twice my size. I should flick this cigarette in his face." Focus: What are your intrusive thoughts?