Let's get the obvious out of the way: You Are Disabled is not a "fun" game. By this I mean the principal emotion/idea that this game tries to convey isn't "fun" and if that's what you are looking for then this game will not be for you. It also isn't always particularly "fair" particularly with the spastic disability.
What it is is an excellent look at what being disabled means. The frustration and anger you feel really hammer home how terrible certain individuals have it. And for that this game gets a 5/5 from me.
Sidenote: I was frustrated with one of the spastic levels when I got called to dinner. When I came back, I noticed that my character wasn't in the right level. I know that before when this happened after some idle time it usually meant my character moved left so my immediate reaction was to curse a little. However, I noticed after a minute or two that my character wasn't on-screen. With some experimenting, I realized he was above the level a la Mario 1-2. Intentional cheat or bug?