Don’t walk under any ladders, Don’t break any mirrors, Don’t spill any salt, And don’t walk by any black cats. Happy Friday the 13th! Fear of Friday the 13th one of the most popular myths in science is called paraskavedekatriaphobia as well as friggatriskaidekaphobia. Triskaidekaphobia is fear of the number 13. Here are 5 short movies for a scary night: Lights Out – Who’s There Film Challenge, THE MAIDEN, Vicious, Bloodbath and Inside.