this is an assassin's teapot it can be used to pour yourself a drink and to pour a drink for your enemy you can then down your drink to prove that the drink isn't poisoned there's no poison in there don't worry about the poison there is no poison but then when your enemy takes a drink they find out that it is poisoned and by the way this doesn't require you to spend the last few years building up an immunity to iocan powder it works straight off the bat no preparation required that's because the assassin's teapot can be used to pour three different drinks which i've shown here using three different colored liquids and by the way if you plan to poison your enemy i recommend using liquids of the same color do i need to tell the viewers that they shouldn't be trying to poison people like legally just that it would break the flow of the video film myself having a fake phone call with a lawyer in which i explain the problem and so long as i say out loud don't try to poison people then that should have me covered okay click the way you choose the drink is by sneakily covering up one of these holes if you cover this hole you get a blue drink if you cover this hole you get a yellow drink if you cover no holes you get a green drink so three drinks in total though actually no four drinks if you cover both holes you get the null drink but how does it work well you know me if i want to describe how a hydrodynamic mechanism works i like to make a transparent NUMBER_TOKENd version of it i'll put a playlist of those videos in the card in the description first i needed to figure out what was going on inside the teapot and a bit like with the gloggle jug the only really sensible way to do that was to hit it with a hammer so you can see there are two chambers here side by side and they both lead up to the spout additionally one chamber leads up to this hole the other chamber leads to this hole for the NUMBER_TOKENd version i don't want to put them side by side because then it wouldn't be NUMBER_TOKENd but i feel like i can put them top to bottom and it should still work and here it is so if i want a blue drink i cover this hole if i want a yellow drink i cover this hole and if i want a green drink i cover neither of the holes and for completeness here's the null drink similarly i could have a black coffee or i could have milk or i could have a milky coffee so that's how it works but why does it work why is it that putting your finger over different holes causes different liquids to flow out well it comes down to surface tension it's similar to this demonstration you might have seen before look i can pull water from this bottle but if i turn the bottle upside down no water pours out the trick is that there's a gauze covering the opening of the bottle so when i pour it like this water can flow out and air can flow in but when i turn the bottle upside down for water to flow out air would need to flow in and for air to flow in surface tension would need to be broken here's another example where instead of a gauze there's a
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