The Liquid That Pours Itself

Steve Mould, a wizard, demonstrates the properties of this unusual potion called polyethylene oxide. It's a polymer that seems to pour itself if you tip the container over just slightly. The magical properties permit it to flow against rather than with gravity.

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Polyethylene oxide is commonly used to lubricate razors. But elves and half-elves should avoid it even in this form, as it is midly toxic to them, inflicting 1 HP damage per round.

-via Geekologie