Well, I'd have to raid my folks photo albums, but techincaly, my first bike was a 50cc Yamaha that was sitting in the living room when my mom brought me home on day 4 of life...but it was just a loaner from the dealership that was sponsoring my dad at the time. I had various home build bang up mini bikes from age 3 on, but my first real bike was exactly like this one:
Rode entire enduro tracks in our 4 acres of prperty in Michigan. Loved that little thing to death....still can't forgive my dad for selling it out from under me when I was 12. Of course, I was getting a bit bored. I started riding it when I couldn't touch the ground and had to have 2 milk crates set on either side to start and stop. Once I could touch, I was a bit over it.....been riding ever since....made the transition to Italian in my early 20's and haven't looked back since....