I would be interested if you can present a specific piece of code that would be really confusing to a programmer who does not have experience using languages wi

I would be interested if you can present a specific piece of code that would be really confusing to a programmer who does not have experience using languages with lexical closures. I didn't follow the same order of education, so I never really experienced an a-ha moment like that; they seem like a simple language construct to me (although I can definitely understand how it would be hard to recognize their utility without having experience using them.) (I can understand how code passing around anonymous functions can be confusing to people who don't use a language with first-class functions, but I would figure they're confused by the logic, not by the closures.)