I noticed at lunchtime that P was sporting a white plaster wrapped around his fingertip. When I asked him what had happened he said that he had been chopping up some old plant cuttings with his secateurs and nicked his fingertip in the process.
When I asked if he had washed his wound under the tap he said there was no need as he had sucked it before applying the plaster.
I pointed out that, as well the goodness knows what kind of stuff was in the soil matter on the secateurs, there were several rather nasty types of bacteria in human saliva but he said he has been doing the same thing for cuts since he was a boy and has survived so far.
Hmmm. Well, don't come running to me when you get septicaemia.