A Barotrauma Moment occurs when the game mentioned, Barotrauma, is either:
A: Broken in some fashion which would be easily rectifiable, yet isn't
B: Doesn't work on one occasion, and then magically fixes itself on another
C: Is limited by its basecode or limited by the developer's choices in hardcoding
Modder: "Man, my mod broke again! ..Wait, it isn't? Its reading my package as valid again!"
2nd person: "That's a Barotrauma Moment"
Short-hand for the word floccinaucinihilipilification, meaning the estimation of something as valueless (encountered mainly as an example of one of the longest words in the English language).