Any one or thing that fails to meet expectation in relation to ability or monetary compensation.
*From Old English: docga or dog meaning: a highly variable domestic mammal. From Old Irish: asan or ass meaning: Any of several hardy gregarious African or Asian perissodactyl (4 legged) mammals smaller than the horse and having long ears.
Former NFL player Richard Dent was a doggass! He only played hard once every 4 downs.