What happens next?

How to have google glass etiquette 
Prepare to be noticed. 
There are only about 7 , 000 devices in the us and about 10 , 000 total in the rest of the world. You will get plenty of attention while wearing google glass because it's a novelty and a curiosity at this point in time.
The novelty factor and desire to learn more about it makes it even more of a reason to be courteous to those curious about your new technology. If someone asks you about what you're wearing, be gracious.