I didn’t always like sports, but that was overturned once I went to see a baseball game and now I’m a big fan of the Mariners.
Because the hiragana ends with an う sound, you know this word is a verb. The kanji itself means capsize but the verb version is what happens when a plan or idea capsizes. It going to be overturned. It was a bad idea, go back, don't do it or we'll all sink!
Of all the ideas that need to be overturned, it's the ones from the 靴 guy (くつがえ). He thinks we should only wear shoes. Not shoes and nothing else, but shoes all over out entire bodies. Yikes, now that's an idea I'd like to be retracted, 靴 guy.