Cave Johnson here! Have you ever heard of the phrase "making someone roll over in his grave". Well, I came across it the other day, and had the boys in the lab hook up some generators. Limitless energy! All we have to do is offend some oldies. If you applied to get your gender transed, enter through door A. Make sure to keep wearing those Aperture Science reinforced knee-high socks after the procedure is done. They'll protect you from the vengeful spirits. We summoned a lot of vengeful spirits.