'world-ever first' sentences

One of the curious facts I like about writing is that so many of the sentences you come up with are absolutely unique. No-one has ever written or spoken them before.
The sentences don't have to be weird, with odd made-up words and twisted grammar. In fact that last sentence is probably unique in the history of the world, as is this, and who knows maybe the first one too.
I like teaching the fact and getting kids to have a go. They don't generally go for simple, but try out such stuff as 'the polka-dotted dragon spat out the blue chrysanthemum'.
It's special, knowing your sentence is a world-ever first.