Being the son of a Marine, as well as serving in the Army and working offshore on a drilling rig, I know all the "bad" words and the creative ways to use them. However, as a follower of Jesus Christ, it behooved me to find a cleaner way to speak when I got married and began having kids.
So, every time I'd get mad, I'd say "DAD GUMMIT!! or some other epithet like that. To this day, my kids (two of whom are adults now) don't cuss (even though they now know the words).