A coworker opened a PR full of AI slop. One of the first things I do is check if the tests pass. Of course, the didn't. I asked them to fix the tests, since there's no point in reviewing broken code.

"Fix the tests." This was interpreted literally, and assert status == 200 got changed to assert status == 500 in several locations. Some tests required more complex edits to make them "pass."

Inquiries about the tests went unanswered. Eventually the 2000 lines of slop was closed without merging.