Oh! Oh, no, it was a training droid. [Luke laughs at the miscommunication. Ben would have never fired a blaster on him. Ben would have never fired a blaster to begin with.] The worst it did was sting me.

My teacher? Oh, he was the best. You might have met him! [The idea hits him suddenly, and it's clearly an exciting prospect.] He called himself Obi-Wan Kenobi when he was here.