Must never turn off the lights!
A different perspective
You know, evil and such is a perspective. That goes for grues as well! If you just view them that way, surely their eating of you is but a sign of love and benevolence. And your eating of us girls is a pleasure. We want you to find your way down there. Baby, do it now! Don't run, and don't turn on the lights; they lurk with good intentions.