My uncle, when mad, would say "dang". When I was 9 years old, I had Rheumatic Fever, and had to stay home for three months. They sent a very old, tall, fat, lady teacher to my house, who was extremely righteous. One day I said, "dang", after giving an incorrect answer, and she exploded! "Well, just come out with it!
God Dam it! It is a sin to use that word! You are calling upon the Lord to condemn". She then left our house, in a huff and a puff, and they sent a different teacher the next day. Such memories.
Tom