I think I have put this little episode together:
1) His name is PJ, which to me means the everclear-Tang-fruit bathtub mixture from college.
2) PJ was walking into the Fresh Market looking for fruit. Perhaps to make another PJ?
3) I would only let someone I just borrow my car AFTER I had consumed a few PJ oranges and didn’t remember my own name.
I think this is what happened. Just speculation, of course.