A level plonkerology

What's more back-breaking than laying paving slabs?
Laying paving slabs twice. Yesterday I layed 60% of these riven sandstone paving slabs. I know they are called riven because I looked on the pavingexpert website this morning. It's a very good site full of very useful information. I also now know that they have a top and a bottom. Yesterday I layed them arse over tit.
Today I relaid them all.
What fun!
I knew that A level in plonkerology would come in handy one day.