Elon Musk thought he was hot shit and bought twitter while simultaneously picking a fight with the internet. The end result is Musk got musked: All that remains is his fragile incel core.
To completely mess something up and be 100% at fault for it. Though typically applied to business decisions it can apply to anytime someone messes up something really easy, also similar to making dumb statements the rest of the world knew was dumb but doubling down on it - similar to putting your foot in your mouth.
Bob thought NFTs would actually be an investment strategy after he saw it on the local news. he really musked it up.