Bingowings said:

Well that changes everything.

What really happened then?

A coworker got angry with me for speaking to another coworker for a total of 15-20 seconds, slammed his fist on the desk, and huffed-n-puffed. He then said that we were bothering him.

I rarely speak, as I'm not one to socialize, so it pissed me off.

This is ridiculous because we work in cubicles (I'm a Computer Programmer), so one can't have any reasonable expectation of a quiet work environment.

The coworker with whom I was speaking claims that this particular guy explodes every now and then. There's no room for that in any workplace and, yes, I do expect people to become Spock-like at work.