This didn't happen, but just something I dreamed up.
4th and 1 at the B-2. A12 receives the snap and hands off to A22 who runs up the middle and disappears into the pile right at the line of scrimmage out of view from any official (5 man crew). Both wing officials crash in to locate the ball. After un-piling all the players, A40, the fullback has the ball in his possession in the end zone at the bottom of the pile.
What'cha got?