What does it feel like in the mind of someone who is mentally disabled?

Mental trip?: At this juncture in time, no one knows what it feels like in the mind of a mentally challenged person. The brain is incredibly complex and science is only beginning to understand some processes/functions inside it. So, i cannot tell you how it would feel because we just don't know much/enough. There is always ongoing research, so stay tuned. Good luck finding the answer.