....to say it's positive, is there any way of telling whether they were lying or not?
Just say, they were self employed, they sent this out to their clients to show that they had covid, but there some weird shit that doesn't add up and you wondered if it was every true.
(The week before, I told this person how my kid got pranked because his friend sent round a text saying that he was positive but all his friend had done was copy and paste the text and change the name to his. A seed had been sown...)
I just wondered if there was a way of finding out if it was true without asking them for more proof?