Google's AI does some explainin' of the Ricky Ricardo quote:
The line "Lucy, you've got some 'splainin' to do!" is a famous Mandela Effect, as it was never actually said by Ricky Ricardo in I Love Lucy. While he often told Lucy she had "some 'splain" to do, or "you got some 'splaining" to do, the exact phrase became popular through misquotes and parodies, with impressionists and comedians altering the line slightly for comedic effect.
Essentially, the misquote became more famous than the actual lines from the show, leading to the widespread belief that the exact phrase "Lucy, you've got some 'splainin' to do!" was a part of I Love Lucy.