Cheating can have cultural connotations too---for example, the expression 'cheating death' implies by its nature that one believes death in an entity and not just as a mechanical process.
Do you think it is every possible to truly achieve 100% fluency in a foreign language? Or will there always be small nuances you might not fully grasp? I am thinking of this theory we learned in my old college linguistics class called 'native speakers intuition.' It stated that people have an instinct with aspects of their native language that they cannot duplicate with subsequent languages they learn. For example, you could look at a badly constructed sentence and instinctively know it is wrong, but it someone asks you to cite the rule or to technically explain what the problem is, you might not be able to.
I took the course in 1998 or so and I am wondering if this theory has been debunked since