This is probably unethical, but such concerns are irrelevant when you are as burned out on grading as I am at the moment. The following is an actual answer from an undergraduate's final exam, which I am quoting verbatim. The question was to define an "externality":

"Externality is the outside side effect that going outside for help can be beneficial, like if we run out of pineapples we could go to another neighboring country + ask for their pineapples."

I need a drink and a shower. My soul hurts.