42 is not the only answer!!!

'X' was originally developed as an Indian folk music instrument. It is important for religious purposes and music in India. 'X' was popular in the Badagutittū about fifty years ago. However, prior to this it derived from Indian folk music and was used for religious purposes. 'X' is traditionally made from a dried bottle gourd. Often, the neck of the gourd is carved for aesthetic reasons. On the other end, two reed or bamboo pipes are connected. These are known as the jivala. One of the pipes has seven holes and plays the melody; the other pipe is for drone. The jivala is fitted to the gourd with beeswax, which can be adjusted for pitch modification. A Shehnai is thought to be developed by improving upon 'X'. 'X'?

This particular person was the hero of Jerry Siegel and Joe Schuster and they created 'X' based on him.

Id 'x'. There is also a funda you can crack from the picture, that is used even today although its pretty unorthodox. Put Funda.

Sodium thiopental: is an ultra-short acting barbiturate, often used for anesthesia induction and for medically induced coma. The typical anesthesia induction dose is 3–5 mg/kg. Loss of consciousness is induced within 30–45 seconds at the typical dose, while a 5 gram dose 14 times the normal dose is likely to induce unconsciousness in 10 seconds.

Pancuronium bromide (Trade name: Pavulon): This is a non-depolarizing muscle relaxant (a paralytic agent) that blocks the action of acetylcholine at the motor end-plate of the neuromuscular junction. Binding of acetylcholine to receptors on the end-plate causes depolarization and contraction of the muscle fiber; non-depolarizing neuromuscular blocking agents like pancuronium stop this binding from taking place.

Potassium Chloride: The usual intravenous dose is 10-20 mEq per hour and it is given slowly since it takes time for the electrolyte to equilibrate into the cells. When used in state-sanctioned lethal injection, bolus potassium injection affects the electrical conduction of heart muscle. Elevated potassium, or hyperkalemia, causes the resting electrical potential of the heart muscle cells to be lower than normal (more positive). Without a negative resting potential, cardiac cells cannot generate impulses that lead to contraction.

Typically used ingredients of what?

'X's locale originally New York City was changed to a fictional city which was originally going to be called 'Civic City'. The name was then changed to 'Capital City', and then 'Coast City'. When 'Y' flipped through the New York City phone book and spotted the name ''Z' Jewelers' he decided to call it 'Z' city. 'Z' had long been a well-known nickname for New York City even prior to 'X's introduction, which explains why "'Z' Jewelers" and many other businesses in New York City have the word 'Z' in them. The nickname was popularized in the nineteenth century, having been first attached to New York by Washington Irving in the November 11, 1807 edition of his Salmagundi, a periodical which lampooned New York culture and politics. Irving took the name from the village of 'Z', Nottinghamshire, England, a place that, according to folklore, was inhabited by fools. The village's name derives from Old English and it literally means "haven for goats".

'X' & 'Z'?

The non-toxic, non-staining, reusable modeling compound that came to be known as 'X' was originally a pliable, putty-like wallpaper cleaner concocted by Noah McVicker for Kutol Products, a family-owned Cincinnati-based soap company. It was originally composed of flour, water, salt, boric acid, and mineral oil. Following World War II, McVicker's nephew, Joseph McVicker, joined Kutol and discovered the wallpaper cleaner was being used by nursery school children to make Christmas ornaments. The product was then reworked and marketed to Cincinnati schools in the mid-1950s and it was named 'X'. 'X's 2004 United States patent indicates it is composed of water, a starch-based binder, a retrogradation inhibitor, salt, lubricant, surfactant, preservative, hardener, humectant, fragrance, and color. A petroleum additive gives the compound a smooth feel, and borax prevents mold from developing. 'X's current manufacturer is Hasbro and it is widely used by children today in arts and craft.

Id 'X'

'X'-Playdoh

'Y' is a name given to fans of the American jam band, the 'X'. In the 1970s, a number of fans began travelling to see the band in as many shows or festival venues as they could. With large numbers of people thus attending strings of shows, a community developed.T he term first appeared in print at the suggestion of "Hank Harrison" on the sleeve of 'X's second live album, released in 1971. It read:

“ ____ FREAKS UNITE: Who are you? Where are you? How are you?
Send us your name and address and we'll keep you informed.
'Y', P.O. Box 1065, San Rafael, California 94901

The following celebrities have claimed to be 'Y's:
Whoopi Goldberg is a fan of 'X' music and personal friend of Mickey Hart.
Tony Blair - played in "Mars Hotel"-inspired student band
Steve Jobs famous deadhead
Al Gore
Bill Clinton
Owen Chamberlain - claimed the Rhythm Devils gave him "interesting ideas"
and the list goes on..

'X' and 'Y'?

'X'-Grateful Dead,'Y'-Deadhead