First District Appellate Justice Mary Lane Mikva told a young boy she will use his teeth to eat the brains of a skinny animal.OK, not really.Mikva had a leading, but uncredited, role in a clip released by the viral-content parody website ClickHole, where she played a grandmother who will be receiving her grandson’s teeth through some sort of unexplained operation.The 81-second video, titled “Adorable: Watch This Elderly Woman Tell Her Grandson What Things She Plans To Eat Once Doctors Put His Teeth In Her Mouth …