A person who, when chores obviously have to be done, contributes nothing and sits on his or her ass. Most apt when the person is among others who are pitching in to help.
"Did Deb help you out in the kitchentoday?"
"No. She just sat around drinking coffee being a Patty ass."
(wîrd)(ás)(pärté)
n. pl. weird ass par·ties def: A social gathering for pleasure or amusement, focusing on or celebrating the strange or otherwise out of the ordinary; rectum, behind, bum, rump, gluteus maximus, dumper or posterior.
The conjoined fetustwins had a weird ass party before they were surgically separated.