Think of a time you get really defensive?

I cant think of a time I get defensive but do you have any examples to help ring a bell for me?

Would comments like these make you defensive?

Whenever you receive a negative "you" message, e.g., "Why don't you ever (some positive behavior)?" or "Why do you (some negative act)?"

When someone calls you names, e.g., "You idiot!" or "You lazy slob!"