you see, the joke is that on my last trip to the movie theatre, in which i watched "Spiderman: No Way Home", i made a social media post, that of which read: "spiderman no way home spoiler: spiderman jumpscare at the end". Therefore, it could be found humorous by those who recall said post, as this current post is referencing that one. It is also rather coincidental that two movies of which i traveled to a theatre to witness in a row concluded with a person or object moving at a high speed towards the camera, and with that, the audience. Therefore, it is labeled a "jumpscare". This element of the sentence could also be comedic, due to the reader's likely familiarity with horror games, most prominently, the indie series known as "Five Nights at Freddy's". An iconic part of Five Nights at Freddy's is that the antagonists will move towards you in a quick and sudden manner while emitting a loud noise if you fail to fend them off properly. This is what's known as a jumpscare. While the element of the loud noise isn't present within the movies "Lightyear" or "Spiderman: No Way Home", the visual element is still enough to evoke the familiarity. With all of this combined, this makes the joke: "lightyear spoiler: spaceship jumpscare at the end" humorous.