Coincidentally, I went for a poo the other day.
I must have had a lot on my mind, think I sat there for a while.
Anyway, it turned out that, when I stood up, I couldn't remember if I had done a poo or not.
I actually had to look in the toilet to see if there was a poo there in order to ascertain whether I needed to wipe my arse or not.
In the end, it transpired that I had not in fact done a poo, and no arse wipes were required.