Not pissing at all could indicate you are a ghost. Check by taking a selfie and posting it online, if you see a red circle around you, you are in fact a ghost.
I chatted to someone on the train once who told me she got addicted to the habit of drinking water and was hospitalized for a month or so because she basically flushed out all of her electrolytes and was deficient in everything. She said she was at 5-6L though.
When I was drinking heavily on a nightly basis, I drank massive amounts of water to keep hydrated each day. The two coworkers at my office who share the space are both a good amount younger than me. I assume they think I have old-man bladder from how often I went to the bathroom. I'd rather that than explain that I was a functional alcoholic. Oh well, whateverβ¦