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.