pygalgia :- [< Gk pyge 'buttocks' + algos 'pain'] "Causing or concerning a pain in the ass." Milvus Illutibarbus Dipsophrenia boreas.

heh. I have classes full of pygalgic children...

I propose a verb: to pygalge: to cause pain in the figurative butt (intransitive)

Example: He will have been pygalging the region to such extremes that the cows will never come home.