Can we talk about the time you had to fix a ceiling after a plumber?
Got called to a house in Bellingham where the plumber cut a 4-foot square hole in a finished drywall ceiling to fix a leak, then just left it. Spent my whole Friday patching and blending that mess, and the homeowner was mad at ME for the extra cost. What's the worst 'not my problem' cleanup you've walked into from another trade?