Pedro: Do you have a charger?
Pedro had his cell phone in his hand, and it looked like he was about to ask me if he could borrow my charger so that he could charge his phone.
P: (incredulous) You don't?
Me: Why would I need to have my charger?
P: To charge your phone.
Me: Have you even seen my phone?
P: You don't have a phone?!?
Me: I didn't say that. I just said you haven't seen it. I haven't been on it. So, why would I need my charger?
P: You might need to charge your phone. You might not charge it overnight and it could get low.
Me: Why? I'm not using it.
P: But it could lose power... What does it matter that you haven't been on it?
Me: You asked me if I had my charger.
P: And you told me you weren't using your phone.
Me: After you questioned why I didn't have my charger.
P: No, I didn't.
Seriously. This isn't verbatim (I truncated it a bit), but it's pretty close. And in this amount of time Pedro managed to forget that he started this line of inquiry. Sigh.
Of course, none of this is truly relevant. Even if I had had my charger, I wouldn't have lent it to him. Not that I cared if he charged his phone (a charging phone is a phone the student is not using during class). We have different phones, and my charger would not have connected to his phone anyway.