Gossiping about gossip

I overheard a line from a conversation while at lunch the other day and couldn't help but chuckle.

A woman said to her friend in reference to a coworker of theirs, "She really gossips a lot about people to Amy." She then proceeded to talk about how much of a gossip this person was.

The irony wasn't lost on me. I wonder how often I've been guilty of that?