When somebody has the little holes in their face (from acne scars) that resemble all the craters on the moon
Person 1: "Bro you really should take care of that acne before you get moon crater face"
Person 2: "Yeah, my brother had moon crater face and was taken away by NASA"
some one who is so ugly they make u want to throw up.
(acne, and general uglyness)
did u see that girl, looks like she took craters to the face