Holy smokes, mmm...cheese, are you working in an environment surrounded by under-achieving junior high school dropouts? I can't imagine having to put up with that kind of shit on a regular basis. I've always worked in offices where professionalism was required, and standards are such that behavior which is less than acceptable results in disciplinary action, up to and including dismissal. Yes, it's a bureacracy, which has other disadvantages, but being harassed is definitely not one of them.
I'm with Bitch and HoneyImHome on this one. Rise above the moronic masses and be yourself, by yourself if necessary. Sinking to their level may be momentarily gratifying, especially if you don't get caught, but wouldn't do much to encourage a change in puerile antics.
If you want to find comraderie amongst co-workers, look for others who are more like you - thoughtful, considerate and willing to act like grown ups.