Nettles Spankings
Here’s a website that’s all about the nettles spankings. The English is a little bit entertaining, but there’s plenty of good information and photographs:
One can choose to caress the buttocks of the punished simply by walking stinging nettles on the skin from top to bottom, that is by putting at first the extremity of stalks and by making them slide on buttocks up to their base… That does not generally make laugh the owner of behind so caressed!