Local messengers around here have occasional alley cat race where at every stop you have to drink something and do a challenge (spinning around with your head on a bat, pushups, etc) before getting your next destination. Pretty impressive since they start as early as 11 and by the time they're done it's about 7 o'clock and they're all hammered, riding fixies no less. Definitely not my cup of tea but it makes for an interesting day downtown when drunk bike messengers are flying around haha