What's that longest time you went without eating? Why?

Two and a half days. Also how I came to really understand how abusive my mother is. I needed surgery for a knee injury. I wasn't allowed to eat since the evening before. I went in, had surgery and my parents took me home to "take care of me". I was so hungry after the surgery because it was like 2 pm and I hadn't eaten since maybe 4 pm the day before, so I asked if we can stop for food. I was told no, we have food at home. "Home" was an hour by car away.

So we come home, I somehow manage to get into bed and ask for food. My mother exploded, yelled at me to not be a lazy good-for-nothing that slouches around on the bed and that the only way I was getting any food was by getting up and sitting at the dining table like a normal person. I really don't know why I thought they'd treat me better this time. I guess I thought they'd know it's a legit surgery (unlike non-legit things like flu and fever that has never been an excuse to stay in bed). Anyway, I had my bottle of water with me but no food. Probably not enough water either. On the evening of my second day there my leg was feeling good enough for me to hobble into the kitchen and grab some snacks.

On the bright side, I learned that the stuff I've been telling myself like "Yeah they're assholes but will be there for me when I need them" was a lie.

I've done 7 days on a fast, water only. My partner and I were testing if their seizures would stop without food and they did.

I went roughly 2 weeks without food after I got out of the hospital from a severe head injury. I tried to eat, but I temporarily lost my sense of taste and my brain hallucinated this absolutely terrible taste in its place. Even my saliva and the inside of my mouth had this taste. In the hospital I mostly got my nutrients via IV.