This is when a person introduces a conversational topic with others only to have a conversational pirate hijack the topic leaving the person marooned on a conversational island. Smoke signaled by, "What were we talking about?" "How did we get on this topic?" or "Oh..." if they even remember said person was talking.
Amy: I really love that song by...
Owen: I was in choir in College. I think we sang that song!
Blake: Bro, I didn't know you could sing? *sarcasm* Do you ever stop?
Owen: Did I tell you about my solo senior year? It was cray.
Amy was Captain Jacked.