Do you swear a lot when you speak?

It depends on the company present. If I'm around people for whom it would be either prudent or respectful (or both) to be as couth as possible toward, so I am.

Outside of that? Again, it depends, but I can tend towards cursing like a drunken sailor if I'm in certain moods or amongst friends who're doing the same.

Oddly enough, you can tell I'm on the edge of absolute rage when I'm speaking in an incredibly clipped tone but not swearing at -all-...

Have at it.