English Trainer Chronicles: Blah, blah, blah

Our lesson was on using phrases for interrupting politely. He spoke English quite well, but he wasn't sure how to use the phrases.

Me: Let's pretend I'm talking, and then you have to interrupt me. Okay?
Him: Okay.
Me: So, blah, blah, blah, blah--interrupt!
Him: Excuse me, but I have a point to add.
Me: Good! (Pause and wait for him to make his point.) And what is that point?
Him: Oh... (Thinks.) Blah, blah, blah, blah.

After I stopped laughing ...

Me: That's not really English, you know.
Him: Yes, I'm not sure I'm improving, but I made you laugh!