mystery bag
Proposed by a contributor, not yet supported by evidence.
Sense 1
Meaning · English
A sausage.
Register: slang
Where it’s used:
Used
Australian English
Examples
Bully beef and spuds, tripe, fish′n chips, Anzac bikkies, damper with cocky′s joy (golden syrup), snags (or mystery bags) and hot custard and jelly for sweets.
Usage example from English Wiktionary (CC BY-SA 4.0, retrieved 2026-07-30)
Sources & notes
Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-07-30 via kaikki.org).
Sense 2
Meaning · English
A pie.
Register: slang
Sources & notes
Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-07-30 via kaikki.org).
Common questions
What does “mystery bag” mean?
A sausage.
Is “mystery bag” formal or informal?
mystery bag is generally slang.