shitbox noun3 •(disapproving, vulgar) A dump; a run-down, messy or disgusting place or item.My house is a shitbox. •(disapproving, vulgar) An old and decrepit automobile.What's funny about the comparison between a 70's car and a 00's shitbox, is that the difference is almost as drastic in the 10 years that have passed. — 2016 •(vulgar, offensive) A contemptible person."You shitbox!" Ellen roared. "You piece of living shit!" — 2008 formsshitboxes