Think of a couple of fun or exciting things that have happened to you or that you've done and then narrow it down and chose one to be your topic!
Right off the bat you can cross out idiom off the list, which leaves us down to slang, jargon and dialect. It isn't very likely it's dialect since that refers more to regional language or a specific group of persons. Now we are down to two possible answers, slang and jargon. Slang is categorized as very informal and is not connected to a particular group or profession. I'm not sure which English you are in but jargon is one of the rhetorical devices learned in AP Language and Literature. To be more specific, jargon IS the language which is involved with a particular group or profession. For example, in terms of running some jargon could be "fartlek" and "strides".
Johnson's and Goldsmith's political views were nearest those of a Tory.
Tories were one of the two important parties in Britain during the 17th - 19th centuries (the other one being the Whigs). Whereas the Whigs wanted to depose of King James II/VII, the Tories wanted him to stay and rule. Even though both Johnson and Goldsmith lived during the 18th century, they were still heirs of Tory beliefs.