Piles cure for Rock Stars

This is Toadflax - Linaria vulgaris
Apparently you can stuff a load of this into your kecks and it helps piles. Although what people are going to say when they spot a wadge of Toadflax poking out the back of your trousers I don't know. How do they find this out? OK imagine you've got piles. I would guess your first thought would not be to stick a load of Toad flax up your back passage or any other plant for that matter. Now then stop it..... there could be a few exceptions depending on your orientation. But generally you wouldn't. So how do they find out that Toadflax is a good piles cure. Just like how did they know to boil Toadflax in lard and use it as an ointment to cure skin problems including some cancers (allegedly).
PS I don't have piles.