Oh! Sheep is a peculiar little game. The idea is that you are supposed to help save the world from the evil Dr. Friedrich by... escaping from him? What's more, this is further accomplished by eating his berries to change colors, allowing you to activate switches and leave via UFO. Yes, friends, we're through the looking glass on this one. Just roll with it.
If someone calls you a "sheep," the implication is that you're a brainless follower of some ideal or policy. Not a very flattering character trait to be sure, but sheep-like tendencies make up the core gameplay of Oh! Sheep, a line-drawing game for iOS. Sometimes, walking a direct path isn't so baaaaa-d.