...Solid bone, all the way through, with a pea-sized cavity to hold my pituitary gland.

Arghhh!!!  I've spent most of my day writing letters to the IRS, appealing on behalf of clients who are too lazy or indifferent to be bothered with filing forms on time or responding to notices.  My mental capacity ran out a long time ago.  How many times can you write such phrases as "reasonable cause", "good faith", and "lack of willful negligence" in one day, before you lose your mind?  I really need to be working hard and producing results, but I can't seem to concentrate.  Maybe it's time to go home...