oops I did it again!

I was once again sleeping on the couch yesterday.  When I awoke, I thought I was very lucid.  This then happened:

Me: Did [patient's name] go home today?  Because he was supposed to once his blood culture is negative x 72 hours

Kevin: I don't know what you are talking about.

Me: I guess you wouldn't know, because he is actually Diana's patient.  But Diana was off today, wasn't she?  So you should have been covering for her patients.

Kevin: I don't know who you are talking about.

Me: [frustrated] Diana Chen, the new intern.

Kevin: [was very amused at this point and came over to the couch to look at me].

Me: [exasperated] I am not sleeptalking!!  I am awake!

Kevin: I know you are not! [laughs]

Me: I really am not sleeptalking!

I then quickly realized that while the content of my speech was accurate (I really did know that patient under Diana's care who is supposed to go home; no Game of Thrones characters on the service this time), I was directing my questions to the wrong person.  I thought Kevin was actually John, my co-resident for the last two weeks....