Slightly OT, but since the focus shifted to safety: is that battery really dangerous? I'm really asking. I remember, as a kid, testing for charged 9V batteries

Slightly OT, but since the focus shifted to safety: is that battery really dangerous? I'm really asking. I remember, as a kid, testing for charged 9V batteries touching the bare electrodes with my tongue. It was a funny feeling, but that was way before the "little chemist" became the dumbed down shadow of itself and everyone was screaming "safety". For science, ladies and gentlemen, I'm now measuring the resistance of ~5mm of my tongue: it's 90kOhms, that should be a lower bound regarding the experiment.