I work with a bunch of ex-military folks, and they have, if nothing else, greatly reinforced my habit of swearing all the time. Most of it isn't even meant to be obscene - it might as well be punctuation at this point.
I do this when I get particularly frustrated with something - usually just strings of incomplete phrases. Granted, it doesn't stop me from swearing, I just stop sounding coherent after I run out of different obscenities to use.