I have plenty of words for that cyclist. Unfortunately most of them will be starred out on CC.
I hope he seriously hurt his arms on that corrugated metalwork because he deserves it. What he was doing was not clever or efficient, it was bloody stupid.
He went and knocked the warning sign off the back of the lorry, so someone is now going to crash into the back of it and die and it will all be his fault. The video then ends with him looking to pass a lorry on the inside and grabbing onto it. If I had been the lorry driver I would have accelerated, then braked hard. That could teach the idiot to be such a selfish prick.
Matthew, I feel sure (or at least I hope) you were joking about braking hard in front of another road user to teach them a lesson.
If you weren't - and are subject to that kind of impulse (some of your earlier videos suggest that you can react quite strongly) then I'd tear up that driving license of yours and go and make a nice pot of tea. Being in charge of a motor vehicle on roads shared with others might not be your thing.
There is no room on the roads for motorists who slam their brakes on to teach cyclists a lesson.
The rider in the video (real or not) is a barmy toothbrush on recreational chemical enhancements, but is little different from many of the riders one sees in larger cities in the UK. With you behind the wheel of a car and brim-full with rightful vengeance, casualty figures might begin to rise.
Even in an angry post on the Internet, it may not be a good idea to advocate accelerating and braking hard to teach a cyclist a lesson. It was a joke, wasn't it?
