Yeah, I swear, just not every other sentence. It's taken in moderation for the most part. I swear at school mostly because the faculty doesn't mind (they sometimes tend to do it too), and when I'm with friends. It's not really a habit, but rather something used for a slight dramatic/comedic effect.
Before anybody says "you don't need swear words to add emphasis to your words," consider this: swear words are considered a formal taboo for a reason: they're rude and often times offensive, and for most people who don't encounter an environment which doesn't frequently use them, they add a hammer drop on top of a sentence. You could use other forms of emphasis, but those are usually added in to a more formal situation (e.g., the mayor of your town can't drop an f-bomb during a speech), and when used in a casual, everyday situation it can prove to be plain awkward.
