What's the best Mnemonic you have ever heard or used?

Question

Is there a good one for the consitution?

Answer 1

My earth science teacher in high school taught us the following for remembering the hardness scale**:

"The girls can flirt and other queer things can do."

(Note that this was in the early 1970s, and interpret the adjective accordingly!)

**talc, gypsum, calcite, fluorite, anthracite, orthoclase, quartz, topaz, corundum, diamond
http://www.galleries.com/minerals/hardness.htm

The best that I created myself was one to remember the "seven churches of Revelation" in order. (I know, not everyone needs this one... but I found it helpful, esp. since the correspondences go beyond the first letter):

"Every smart person thinks Sartre's philosophy ludicrous"
(=Ephesus, Smyrna, Pergamum, Thyatira, Sardis, Philadelphia, Laodicea)

Answer 2

SEX

It is a mnemonic in an old 6809 processor chip assembly code that stands for "Sign Extend".

Answer 3

I like the one "Two Zebras Bit My Cookie" for the nerve branches of the head: "Trigeminal, Zygomatic, Buccinator, Mandibular, Cervical."