"Is the glass empty or half full?"
Neither, it's completely full, full of teen angst.
"So it has angst in it?"
No, it's filled with piss.
"Does that mean teenage angst is... piss?"
It is, but that's not what I meant.
"What did you mean?"
It's simultaneously full of teen angst and with piss, but both separately.
"How's that possible?"
It's the Schrodinger's cat of a glass. Both alive and dead. Angst and urine.