I admit that I swear quite often. It's not that I shout at other people, it's mostly just muttered to myself.
The words I use most often are - who would've thought? - the f-word, the s-word and DAMN! <.<" I use the last one nearly every day. When I'm alone I say it loud, but when there are other people I tend to be very very silent. I think most people don't even recognize that I say something like that. XD"

The other part of me is more aggressive. When I'm really reaaaaally angry at someone and I talk to someone about that person, I use quite... interesting words. xD" I won't say any, but believe me, it's the worst of the worst that I'm calling the person. Actually, that happened just today. I was muttering to myself when playing FFVIII about a person who got on my nerves today. And I called her... something like... (is it okay to write that word? xD") ... whore << >>"

As you can see, I'm not the person who likes swearing, but sometimes it really feels good to just say something like that. ^^" My mother's often not happy when I tell her about people I don't like with that kind of words. xD"