I am always very careful around bicycles. It is the urban "wassups" on cruisers enroute to deliver their "commodities" that are the most stupid.
But, on Sunday, the Spandex Mafia come out in hordes. I can't list all the stupid stuff they do, the worst however is stopping in the lane mid apex in a blind corner to have a drink, and get a WTF attitude if you nearly run them over.
Pack of 50, uphill, 10 mph in a 55, two lane, no passing, no one will move over.
Rolling speed bumps.