I've seen entire major subsystems written without a single instance variable and without a single instance method -- in Smalltalk -- in an application responsible for multi billions of dollars in transactions at a Fortune 500 company. The depths of how bad is, in bad corporate code is kind of amazing. Though in fairness, I think those super long methods resulted from auto-generated methods that became cut and paste hand maintained.

Yikes. I've seen that in small scale, with copypasted auto-generated code (although not Smalltalk) reaching 5k lines or so at a manufacturing company. But what you're talking about is a whole other level of bad.