There is always a little more toothpaste in the tube. Think about it. - Bill Bryson

The Smokies seem to be in the process of losing most of their mussels. The National Park Service actually has something of a tradition of making things extinct. Bryce Canyon National Park is perhaps the most interesting—certainly the most striking—example. It was founded in 1923 and in less than half a century under the Park Service’s stewardship lost seven species of mammal—the white-tailed jackrabbit, prairie dog, pronghorn antelope, flying squirrel, beaver, red fox, and spotted skunk. Quite an achievement when you consider that these animals had survived in Bryce Canyon for tens of millions of years before the Park Service took an interest in them. Altogether, forty-two species of mammal have disappeared from America’s national parks this century.

"The poet Robert Browning caused considerable consternation by including the word twat in one of his poems, thinking it an innocent term. The work was Pippa Passes, written in 1841 and now remembered for the line "God's in His heaven, all's right with the world." But it also contains this disconcerting passage:

Then owls and bats

Cowls and twats

Monks and nuns in a cloister's moods,

Adjourn to the oak-stump pantry!

Browning had apparently somewhere come across the word twat — which meant precisely the same then as it does now — but pronounced it with a flat a and somehow took it to mean a piece of headgear for nuns. The verse became a source of twittering amusement for generations of schoolboys and a perennial embarrassment to their elders, but the word was never altered and Browning was allowed to live out his life in wholesome ignorance because no one could think of a suitably delicate way of explaining his mistake to him."

By the 1920s if you wanted to work behind a lunch counter you needed to know that 'Noah's boy' was a slice of ham (since Ham was one of Noah’s sons) and that 'burn one' or 'grease spot' designated a hamburger. 'He'll take a chance' or 'clean the kitchen' meant an order of hash, 'Adam and Eve on a raft' was two poached eggs on toast, 'cats' eyes' was tapioca pudding, 'bird seed' was cereal, 'whistleberries' were baked beans, and 'dough well done with cow to cover' was the somewhat labored way of calling for an order of toast and butter. Food that had been waiting too long was said to be 'growing a beard'. Many of these shorthand terms have since entered the mainstream, notably BLT for a bacon, lettuce, and tomato sandwich, 'over easy' and 'sunny side up' in respect of eggs, and 'hold' as in 'hold the mayo'.