Just some of the things that scare me:
Drunk guys driving fast boats fast.
Mulletts.
My always angry, disappointed, fat mother-in-law.
My once thread-thin wife's slow but steady girth gain.
The Hajj.
My dear wife's new haircut / hair-do. (In one evening she went from looking like a wild haired hooker to a butchy duck-tailed lesbonic.)
Those guys with religious signs at big sporting events.
buf