Noun
(colloquial, vulgar) A dump; a run-down, messy or disgusting item.
My house is a shitbox.
(colloquial, vulgar) An old and decrepit automobile.
Synonyms: jalopy, shitheap; see also Thesaurus:old car
(colloquial, vulgar) A contemptible person.
Source: en.wiktionary.orgI feel like with a high performance car, it almost makes more sense to save a budget, “subscribe” for the summer months, and then buy a shitbox Craigslist Subaru in the fall and repeat. Source: Internet
The BT-50 may sound sort of similar to the fabled P-76, but thankfully it's far less of a shitbox. Source: Internet