I have a fear of certain types of 'doors', especially the ones on elevators and the ones in shopping malls and on entrances to large buildings.
I'm afraid that if I don't walk through them fast enough, they'll slam shut and slice me in two. The freakiest thing I've ever experienced was some glass sliding doors in which the electronic closing mechanism was faulty, so the doors would wind back....then slam back together in the most sickening sound ever. The glass doors had no steel frame, it was a pure glass-on-glass clash.
Some bugs I don't mind, but if I see any weird ones that I've never seen before, I do all I can to capture/remove them from the room I'm occupying at the time.
I sometimes also rehearse things I'm going to say to certain people.