I have to admit I do curse on occasion...many times it is light hearted...Why that S.O.B., etc. When I drop something, especially in the kitchen, I often will say, Oh, S--t but am very proud of myself when I don't.
I am very careful at work, because most of my co-workers have no trouble dropping F-bombs and being their boss I have told them bad language is not acceptable in the work place.