I really hate cyclists who decide that they don't have to follow traffic rules. If you want to ride in the street, you have to follow the same rules as people in cars. This applies to red lights, stop signs and giving pedestrians the right of way... and using bike lanes instead of weaving in and out of traffic, where it's hard as **** to see them.

I also hate people who have to tell everyone every single thing they're doing on facebook or twitter. I don't give a shit, and neither should you.