Your tap water might contain minerals like calcium or magnesium that give it a faint sugary edge. Some people are hyper-sensitive to these, especially if they’re used to distilled or filtered water. It’s like your tongue suddenly woke up and noticed what was always there.
And here’s the kicker—your own saliva can change the game. If you haven’t eaten for a while, your mouth’s natural amylase (an enzyme that breaks down starches) can make plain water taste sweet. So basically, you’re drinking water and your spit is turning it into a free dessert. Weird flex, but okay.