A gold or silver charm in the shape of a small horn, worn on a chain, popular among young-adult males, especially those of Italian ethnicity.
There is no doubt that few if any of the young men who wear the ubiquitous "snaggle tooth" pendant are aware of the charm's true origins: In medieval Italy, it was a sign of shame worn by a man whose wife had left him for another - a cuckold.
Originally, the generation born (in the United States) in the late 1950s and 1960s (roughly corresponding with the eleven-year decline in U.S. birth rates starting in 1958; compare baby bust) to whom a popular novel of this title (by Douglas Coupland) was dedicated; now usually applied to those born during the 10 to 12 years immediately following this.
The entertainment media have taken to regarding Ben Affleck and Jennifer Lopez as "Mr. and Mrs. Generation X."
Valium has become known as "pam" in some circles because its generic name is diazepam; many other drugs in the same chemical class also have generic names ending with those same three letters (Dalmane = flurazepam, Ativan = lorazepam, etc.).