Irrational Fear (one of many)

One of my silliest fear is falling off a penny-farthing bicycle.  You know the kind of bike that has a large front wheel and small back wheel.  


One of these:

I'm not sure why but it's probably that the seat is so high and my feet can't touch the ground should I fall off.  I just imagine myself tipping over and I start to get butterflies in my stomach.  It's such an irrational fear since I probably won't ever get the opportunity to ride one but I'm still terrified, lol!