Film of repairman dropping trousers - might this be? (5)
I believe the answer is:
porno
'this be?' is the definition.
Although both the answer and definition are singular nouns, I don't understand how one could define the other.
'film of repairman dropping trousers' is the wordplay.
'film of repairman' becomes 'rn' (I can't explain this - if you can you should give a lot more credence to this answer).
'dropping' becomes 'poo' (informal term for excrement).
'trousers' is an insertion indicator (trouser can mean to steal or take).
'rn' going inside 'poo' is 'PORNO'.
'might' acts as a link.
Can you help me to learn more?
(Other definitions for porno that I've seen before include "blue items" , "Smutty writing or pictures" , "Books that are dirt" .)