Witness insect awaiting swatter? (3,2,3,4)
I believe the answer is:
fly on the wall
'awaiting swatter?' is the definition.
I don't know anything about this answer so I cannot tell whether this works.
'witness insect' is the wordplay.
I cannot quite understand how this works, but
'insect' could be 'fly' (fly is a kind of insect) and 'fly' is present in the answer.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for fly on the wall that I've seen before include "Unobserved observer" , "inconspicuous observer?" , "Unobtrusive documentary" , "Unseen observer" , "for secret observation?" .)