When I was still working at the girls' boarding school, I used to whip their inner thighs with a wet, thin rod, where it hurt the most. It was a real torture applied to the students, immobilized in the boarding position, with their legs up, after which I would insert bundles of fresh nettles into their small panties. The girls would wriggle like fish on dry land because of the sting and the stripes of the rod on the inner thighs. I would force them to wear the nettles in their panties for ten minutes, after which I would force them to take a cold shower for five minutes. I was very harsh with the girls, I punished them harshly and every two or three days I would refresh the stripes on their small and appetizing asses.