Dying young. (My Pops died age 43; Cancer)
Being famous
Losing a limb
Swimming in oceans, rivers, lakes, etc. (Pools only)
Going to jail
People with that hole in their neck from being lifetime smokers
Having a vehicle I am working under fall on me
Biting or stinging insects or arachnids, like a brown recluse, in my shoe. I keep my shoes in the garage and always thoroughly shake them out before putting them on, but I know that may not necessarily work.
