Like a sailor. I try not to when in public but I can't always control myself, I swear when I drop something or bump into something. or walk in cat's vomit or poop, or something bad happen, like when someone stole my credit card (still mad) , stuff like that. I don't swear at people...usually.... but I did swear at a man who crashed his bike into mine at a stop and then yelled at me for stopping. That man got arrested a few second later for something else...I kinda stopped him while he was fleeing lol.