I made stir-fry once for my Bro and SIL. She kept telling me to stir it, and cook it longer. It ended up cooked to MUSH. Seriously, you could hardly tell what veggies were in it. ::shudder::
But for some reason, they loooove overcooked stuff. And they burn quite a few things because of that. But I didn't burn it, so they thought that was great, and they scarfed it all down!