I was about 4 or 5 years old when I got my first bike. It had stabilisers and a front rod operated brake on solid tyres. The tyres were white with a simple ribbed tread and it was a fixed wheel. The pedal rubbers were white too, I spent a lot of time looking at the pedals and the front tyre trying to coordinate pedalling and steering. The brakes were those ones where, if you sat on the bars when your big brother gave you a lift, the mecanism, would pinch your bum and tear a hole in your shorts when you jumped off in pain. I was only allowed to ride to the end of the road an back so I never learnt to corner, just ride to the dairy, get off and turn the bike around and ride back to the crossing, get off, turn the bike around...
When I was older my Dad took the stabilisers off on one side only so I always fell off on the same knee and elbow. Then he took the other one off to even out the injuries.
By the time I was 10 I had graduated on to a proper sized bike. It had 20" tyres with air in and a 'banana' seat and it had a curvy yellow frame and hi rise bars. It also had three speed hub gears. By the time I had reached 12 I had taken the bike apart and rebuilt it with other bike parts and then I was building bikes from the frame upwards with whatever cast offs I could find and the occasional bought bit. By 14 I was welding up extended frames to make semi recumbent choppers along the lines of motorbike choppers with fat rear tyre, low seat, long forks, hi bars and skinny front wheel.
I would cycle for 10s of miles around London getting praised, laughed at, chased, beaten up, all sorts.
Then I learnt to drive and never touched a bike again for 18 years before I bought my Marin Hawkhill in 2000.