Oh sweet summer child! The Project Manager cheerfully invites the Developer into the radioactive wasteland of legacy spaghetti code like it's just a quick trip to the coffee machine. "20 minute adventure" he says with the confidence of someone who's never had to decipher a single line of uncommented code from 2013!
Cut to reality: 10 HOURS LATER and they're both emotionally destroyed. The dev is screaming in existential horror while the PM has finally realized why the last three developers quit. That ancient codebase isn't just bad - it's an eldritch horror wrapped in duct tape and prayers that somehow still runs production!