history: I once was talking about a coworker behind his back.  It wasn't necessarily an awful conversation; but what I didn't know was that he was working in the next room with the door open.  He approached and asked what I had been saying.  I knew I was caught.  I was so disgusted with myself.  
current: The other week, I was talking about a co-working of mine - okay, I was gossiping..  
next: Hmm, how did that make you feel