Spoilers for the first episode of Star Trek: Picard. Without getting too much into spoilery plot details there's a scene in Picard where one of the Romulan assassins/mercenaries or whatever looking for Dahj appears to spit acid on her after getting knocked down during a fight. And this seemed to confuse a lot of people, including myself, at first because it looks like the Romulan spits acid at her! What really happens, though, is it seemed to be akin to the spy-movie "cyanide capsule" in false tooth. But the execution of it was really, really, poorly done. First of all with the helmet and gear and the guy's pained face all makes the "dislodging the tooth" action not easily seen. Secondly he spits a greenish fluid out which is consistent with the color of Romulan blood (I think the guy's jaw is bleeding or something so some thought the blood, not the spit, was acidic and he spit out the blood that was pooling in his mouth. If you watch the scene, however, you can see that the acid actually reacts with his own skin just as his target. Usually when you see the "cyanide capsule" trope employed in a movie it's more obvious, usually with a tight close-up of the person actually taking out the tooth and biting it and then "swallowing a thing of Alka-Seltzer" foam coming out. The scene I most think of is the scene in the first Captain America movie when this happens and we get the tight close-up, see the tooth getting pulled out, etc. But here? Just not very well executed with the pulled back shot and stuff and we don't get the "foam coming from the mouth" thing, though we do see the acid react to his face as well. In the same scene, it also seems people missed the disruptor exploding (damaged by the acid that was spat out.) I dunno, just thoughts. It's overall funny to me that so many thought "Romulans spit acid?!" Because, well, that's what I thought at first two, be I immediately rewound it and rewatched it and caught the tooth bit.