You see this attitude on every tech answer board. Responses like: why the heck are you doing X, when you should be doing Y like me, I'm brilliant.... Since you've only been there for 4 months, stick it out, and deal with it as best you can.

I know this is going to sound ridiculous, but start going to the gym and build some muscle. This will build your confidence, and put your pencil neck co-workers on guard.