His father should have never bought him that kind of bike in the first
place, knowning his son has no riding experince on the road. But it
also comes down to the person twisting the throttle & i hate to say it
but he has't started out well (riding up & down the road with no gear
on), & where was his father when he was riding around without the
gear on?
When i first started riding my old man drummed it into me about
safety gear, he even gave me his old leather jacket which i wore for
8yrs before i bought a new one. My first bike was a Kawa 250cc road
trail, great bike to learn the skills of roadcraft, 2nd was the mighty
R65 (which i bought of the old man) & i was scared of it's 'bigness', engine size, weight etc, but the old man said "just take it easy".
Just hope your neighbour 'takes it easy'.
Good luck mate.