I can think of several things I did that I could have been DFed for while I was in good standing. Some of them I did even before I had a bad reputation. As other people have said about their offenses, I didn't do anything that would have hurt anyone.
I led a double-life. Maybe it was youth, maybe it was the thrill, but I actually had a lot of fun doing it too. It was a lot more fun being a JW and hiding things than after I left and had the freedom to pretty much do what I wanted.