MST
In real, traceable use. Part of the curated seed collection; community review is coming.
Meaning · English
To mock a work (typically a fanfic) by inserting satirical commentary.
Register: dated, slang
Where it’s used:
Used
American English
Examples
But you can't quote large chunks, and MSTing a story would seem to me to be across the line into infringement.
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).
Common questions
What does “MST” mean?
To mock a work (typically a fanfic) by inserting satirical commentary.
Is “MST” formal or informal?
MST is generally dated, slang.