Meaning

Pregnant, expecting a kid.

Origin

From 20th-century Australia, tied to slang; 'duff' for pudding, slang by 1940s for preg. A 1941 Aussie tale uses it for a bump.

Usage Examples

  • She's up the duff-baby's due soon!
  • Up the duff; congrats to her.
  • Heard she's up the duff; big news.

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