Utiliser "mentally defective" dans une phrase

1. The stories abound about the person, who is mentally defective in most things, but can draw pictures of what they have seen in amazing detail, or play a piano in a way that is a marvel

2. I mean exactly this VVU-Information, when I say that, when each of these Formo-images achieves certain high-qualitative states (also through the subjective dynamics of our structures of Self-Consciousness: for example, according to some animators, movie-makers and storytellers, Ivan-the-Fool transforms from a simpleton and mentally defective rural “bogey” and gradually becomes a sort of homebred sage and philosopher), it can really become involved in the full-fledged and infinitely fascinating dynamics of FLUU-LUU-complexes, however, not as energy-information Formo-clichés strictly limited by a very narrow realizational range, but as more self-conscious and developed FLUU-VVU-Forms

3. He was mentally defective; he shit his pants because he could not control his bowel movements