Yesterday’s Rhymes With Orange:
A visit to a theme park with a linguistic theme: it deals, at least, in onomatopoeia (rattle for the sound a rattlesnake’s tail makes), palindromes (expressions that read the same forwards and backwards, like the names Anna and Otto), and portmanteaus (like palindomedary, palindrome + dromedary) and their visual equivalents, like the palindromedary in the cartoon, a nice counterpart to Anna and Otto.
What to call a place that displayed such things — and anagrams and chiasmus and puns and limericks and knock-knock jokes and sports chants and ritualized insults and auctioneers’ patter and damning with faint praise and Cockney rhyming slang and all sorts of culture-specific phenomena that are manifested in a language (in this case, all are manifested in English) but are not part of the system of that language, the way, say, Subject-Auxiliary Inversion is part of the system of English. Instead, they are things you can do with, or in, the language.
But we have no good word (or other fixed expression) for this rich assortment of language uses and rouitines, so (as in other cases) the poor overworked word grammar is pressed into service. And the theme park is called Grammar Land.