This one goes back quite sometime. Some years ago, when we could just about afford it, we used to have a car. At the end of a working day, I'd drive back home, collecting Julie from her own place of work on they way. This particular conversation took place on a Thursday, just before we were due to partake of a long weekend at my parents' place in Birmingham.
Apparently, Julie had been talking to her colleagues about her plans for the weekend and things had become a little confused in her mind.
Also, note to self; never drive when Julie Logic is about to be applied.