one step below insane anal (insanal)
2 steps below branal
guy 1: so what happened with you and that babe that was sitting on your lap last night?
guy 2: she was so wasted, bro. i took advantage of her and did her up the butt. it was crazy, man.
guy 1: that, my good man, is cranal.
a person with their head up their ass; cranium + anal = cranal
man, your teacher is cranal