Here are a few tips when revising:
1. As you go through your rough draft, it is okay to insert placeholders and fill them in later. You may want to put some thought into the types of insults and interjections you characters will use.
8. Interjections change as time passes. There is no way to avoid dating your book with them.
9. You can't cut them all. Your story would be lackluster without a few strategically placed verbal punches.
10. They can be used for comic relief. Sometimes after a tense moment, you need a little levity.