In my comment to Angie (below, previous post) I talked about the things that scared ME when I was a little kid.
The first was a song I heard in my great-aunt's kitchen when I was a little girl: They're Coming To Take Me Away. I was absolutely TERRIFIED of this song, and the fear of mentally ill people has followed me to this very day. In fact, I was in COLLEGE listening to Dr. Demento one evening, and this song came on and I was so freaked out I couldn't move. My husband can't believe this song ever scared me, because he loved it when he was a little kid.
Second goofy thing that scared me: The Dick Van Dyke episode entitled "It May Look Like a Walnut." Now, how on EARTH could anyone be scared of the Dick Van Dyke show, you may ask? Simple -- My parents went out on a date, and the babysitter let us watch this show. I was freaked out by the "eyes on the back of their heads" part of it, and when my parents got home I asked my mom, "People don't REALLY have eyes on the back of their heads, do they?" My mom, having watched the show and NOT knowing how scared I was, turned around, scratched her head, and said, "Oh, don't be so sure about that!" I screamed and ran down the hall, and to this day my mom feels horrible about how scared she made me. In fact, I just called her a few minutes ago and said, "Hey Mom! Guess what I'm watching?.... The walnut episode!" She just started laughing and said, "I'm so, so sorry I scared you!!"
So there you go... my kids come by their weird fears honestly...