Anyone who has had the pleasure of riding Muni has no doubt seen the curios sign and no doubt scratched their heads after reading it. What exactly does "information gladly given but safety requires avoiding unnecessary conversation" mean? Are you allowed to ask the driver how to get to point A or should you wait until he stops at point B? Now you can confuse all your friends and look cool doing it. The infamous saying has been plastered on a simple looking t-shirt, which is perfect considering the statement is anything but simple.
GET it at Market Street Railway
[Via SF Curbed]