The one and only time I was ever allowed to ride a two-wheeled bike,  I went down a big hill, lost control, and skidded on my face for several feet.  I looked like hamburger.
Worse still, I was knocked out and a car almost ran over me.   Luckily they stopped and called an ambulance.
Yep, it's been an odyssey into adult-trike lameness ever since 
