ROACHES-I grew up in FL and they are everywhere. Sometimes they can FLY. I will never live there again for that reason and the hellish heat.
CLOWNS-I don't think I need to explain it any other way than, "If you aren't evil, why can't I see your face?". Plus John Wayne Gacy was a clown.
BRIDGES-Even high overpasses where you see nothing but sky out of the window, or high roads in the mountains. I just know I will lose control of my car and send it careening into the air, only to plummet to my fiery death.
THE DENTIST-I have to be sedated even for cleanings or I get a mild-to moderate panic attacks. Yes, I am a weenie. But they have sharp metal hooks and do have any idea how many nerve endings are in your MOUTH??!!!