A friend sent me this article from the Latinos Post, about a man who found he had a 4-inch pencil stub stuck in the back of man’s throat.

[S]urgeons at Aachen University Hospital, the largest hospital in Europe, successfully removed the pencil from the head of the young man, who reportedly recovered successfully from the procedure and left the hospital in only a few days, despite lingering blurry vision. The man cannot remember when or how the writing implement ended up in his head, although he recalls taking a serious fall when he was young and then having a significant nosebleed.
[Link]

Typically, I would say that a nice, freshly sharpened wooden pencil will cure what ails you, but I think this is definitely an exception to that rule.