That’s wrong, pop (4)
I believe the answer is:
slip
This clue might be a double definition.
'that's wrong' is the first definition.
(thesaurus)
'pop' is the second definition.
The answer and definition can be both related to natural events as well as being singular nouns.
Maybe there's an association between them I don't understand?
Can you help me to learn more?
(Other definitions for slip that I've seen before include "Drop" , "Mistake; garment" , "Item of clothing; lose footing" , "Slide; fielder" , "Slight error" .)