Sheltered Education 😇

Five young friends packed off in a car for a week on the Moors. Passing through Tadcaster they came up behind a Morris Minor crawling like a snail driven by an old boy in a flat hat - ‘Come on you turd get out of the way’ I shouted.
Everyone laughed except Sarah who had had a very sheltered existence.
‘What’s a turd?’ she ventured. More spasms of laughter!
She then questioned innocently in a plaintiff voice ‘Have I put my foot in it?’
In hysterics I had to pull over as tears of laughter blurred our vision - all except Sarah.