Often synonomous with "asshole". In Texas, at least, this term may be regularly interchangeable with the word "peckerhead". Kindly do not confuse with the term "peckerwood", which creates images of the lower class "white trash" southern male specifically. There seems to be a notion of arrogance associated with the word shitass.
A renowned speedrunner and is in fact the best Minecraft player in our universe. Many people challenge his presence but are left in shambles after experiencing a moment of his power.
"You saw the video about Dream battling shitass?"
"Yeah, shitass fucking destroyed him!"