Thrut is the (imaginary) god of filth.

eg: "I solemnly swear by the powers of Thor god of thunder and Thrut god of filth to keep secret this sacred hunting ground."

The oath that was to be taken if my father was to divulge a rich yet counter intuitive hunting location.
Thomas D. McLaughlin Jr circa 1984
regarding Chinese Pheasant hunting along fencelines, hedges and dranages of wheat fields a few miles north of Dear Park Washington USA.
The oath was often required, somewhat toung and cheek, yet slightly in a fourmal and intimidating way. Usually administered to my big city Gonzaga University budidies I would bring hunting.
Tom McLaughlin