We found 2 dictionaries that define the word dry as a nun's nasty:

General (1 matching dictionary)

1. dry as a nun's nasty: Wiktionary

Slang (1 matching dictionary)

2. dry as a nun's nasty: Urban Dictionary

Definitions from Wiktionary (dry as a nun's nasty) ▸ adjective:  (Australia, simile, slang, vulgar) Very dry. ▸ Words similar to dry as a nun's nasty ▸ Usage examples for dry as a nun's nasty ▸ Idioms related to dry as a nun's nasty ▸ Wikipedia articles (New!) ▸ Popular nouns described by dry as a nun's nasty ▸ Words that often appear near dry as a nun's nasty ▸ Rhymes of dry as a nun's nasty ▸ Invented words related to dry as a nun's nasty