Till today, I find it very difficult to ride a bicycle. I had a horrible accident riding one as a kid which made me to lose interest in riding one. I have tried motorcycle once or twice but I'm just not comfortable in anything that's got only two wheels.
I do know how to ride a bicycle. I remember I learned when I was younger, would stay out in the garden until it started getting dark practicing until I got it and was able to ride without stabilizers.
I haven't ridden a bike in such a long time now though so due to that, I am not sure how confident I would be on a bike anymore.