well, they can be good and bad, cool or gay. they are good, because they protect you from the forces of a direct impact. however, they add more weight to your head (thats why lite helmets like the nine are so good) and can strain your neck like crazy. also, in a tumbling fall, the bigger ones can provide a fulcrom on you neck, and fuck it up. and there are plenty of 'cool' helmets, but mainly its wether they are comfortable (as in you dont even notice it).
I still just have no idea how you can mistake your dick and a chicken neck, let alone not realize what you are doing. -manus
I drink pepto bismal like its water.. -PJO