Haha, same! The first project I inherited was PHP app that used a custom UI framework created by an agency that didn't work with us anymore. One file had 7000

Haha, same! The first project I inherited was PHP app that used a custom UI framework created by an agency that didn't work with us anymore. One file had 7000 LoC and it would generate hundreds LoC of with-sprinkled JS code and send it to the browser on every click. Debugging that thing was a nightmare.