Best I could come up with:
#1 Always ride your own ride. Don't try to keep up with faster riders.
#2 If you're on the back of a bike, you better be holding a gas can.
#3 It's your right to wear what gear you want to wear, but it's everyone else's right to think you're an idiot if you're not wearing proper gear.
#4 Don't be a dick.
#5 Always do the helmet tap to let other riders know about cops.
#6 Never wave at scooters. If you must wave, wave like Jbot/whacky inflatable tube man.