Meet us down at the TOP of the hill. When I say yesterday, I mean the 24 hour period ending a little over 2 hours ago. Tomorrow can mean today or tomorrow.
Yesterday can mean yesterday or the day before that.
It depends on whether you measure days by the calendar or by your personal active cycles. I go back and forth between the perspectives, which wrecks any meaning that consistency might bring to my words. During this time I was getting pretty grouchy, so a lot of the sarcastic stuff I normally say inside my head was being broadcast outside my head. In the old days, I used to announce these things freely, without a second thought. When people started being uncomfortable not knowing whether I was being sarcastic or not when talking to them, I decided that I would no longer say everything out loud.