Watch Your Mouth

Due to the enormous amount of stress I've been under, I've been cussing quite a bit lately. Normally I don't cuss much, but when you combine an insane amount of projects in which a million things could go wrong with extreme sleep deprivation (a mixture otherwise known as the week before finals) a word just slips out sometimes. And then I wind up throwing most of my friends into shock.
My sister says she's very disappointed and upset that I've started cussing. We were always taught not to and so I should know better. As her former theater teacher says "you only say a four-letter word when you have nothing smart to say." I don't think there's anything wrong with saying a bad word every now and then, so long as it doesn't become a habit. It's normal to just let one slip without realizing it.
But she's right. I've been cussing way too much, and I don't want to make it a habit. But I'm pretty sure it's just the stress. I'll stop once finals are over.