Talks fall short unfortunately without resistance - there’s no more (5,3,5)
I believe the answer is:
thats all folks
'more' is the definition.
I know nothing about this answer so I can't judge whether this works.
'talks fall short unfortunately without resistance there's no' is the wordplay.
I cannot quite see how this works, but
an anagram of 'fall' is 'allf' which is present in the answer.
'no' could be 'o' (resembles 0 - 'no' can mean 'zero') and 'o' is found within the answer.
an anagram of 'talks' is 'atslk' which is located in the remaining letters.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for thats all folks that I've seen before include ""Looney Tunes" cartoon sign-off line" , "Bugs Bunny's sign-off?" , "Porky Pig's last words?" .)