The ending of a movie is being described as bonkers, but it is unclear which movie is being referred to, as multiple films are mentioned across different outlets. Some outlets are discussing the endings of specific movies, including 'Wicked', 'Straw', 'Halloween 4', 'Marvel's Iron Fist', and 'Smile 2'. The details of the ending in question are not specified, but it appears to be a shocking or surprising plot twist.