10. Those that you overtake who then RLJ get ahead of you so that you have to overtake again.
LOL they don't annoy me, I just find them funny! It always makes me laugh when I overtake some 'all the gear' type on my hybrid and they are clearly utterly incensed by this and start riding like a lunatic, breaking the rules to get ahead. And then I casually overtake them again with my feet on the handlbars

My only bugbear:
12. Groups of kids on BMXs/BSOs riding around lightless and reckless on the pavement and weaving about on the road, jeering at and trying to 'race' other cyclists. Same kids will be in groups on scooters when they turn 16 and be groups of boy racers shortly after they turn 17, and will never have developed any responsibility and with a group mentality that encourages recklessness.