TE,
I get hit at work on occassion as well. I use the energy drink-ice-scream method.
I slam the Monster (blue) as fast as I can..it has to be ice cold for best results. Then I put my ever-present ice pack on my eye, and proceed to scream. I find the screaming scares people away and retains my "OMG that dude is nuts" reputation I've worked so hard to uphold.
Seriously, I really think the colder the energy drink, the better it works. Someone may be able to tell me the actual body part, but there is a nerve center just above and behind the tongue...If you swallow it a certain way, the cold goes right across it and kills the pain for a few seconds at a time. Like I said, I have no idea what that thing/body part is, but it works.