Well I copied my friends French homework for many years, each time making one deliberate mistake, each time scoring one less point. Then I got an E U grade on my GCSE O Level. U being Undefined for the Oral/Aural? exam, which I failed spectacularly act as I didn't know more than a clutch of French vocabulary and the examiner got frustrated with me as we were supposed to both speak in conversational French the whole time, so either I was asking him what he meant, forcing him to speak in English, which he didn't want to do, or then he would say that I have to ask him: Que'sce Che por mot "for such-and-such" and then he'd mumble a word I'd never heard of before which he expected me to use
Fun times.
It was all a successful strategy though, as I never wanted to learn a language in the first place, but wasn't given the option.
So, I thought, do it, do it badly, but don't draw attention to yourself as a remedial case by cheating for years.
Je regret rein.