Figure of fun, slacking, ought to be corrected (8,5)
I believe the answer is:
laughing stock
'figure of fun' is the definition.
The definition suggests a singular noun which matches the answer.
'slacking ought to be corrected' is the wordplay.
'to be corrected' is an anagram indicator.
'slacking'+'ought'='slackingought'
'slackingought' anagrammed gives 'LAUGHING-STOCK'.
Can you help me to learn more?
(Other definitions for laughing stock that I've seen before include "Object to joke" , "Target of ridicule" , "Butt of ridicule" , "inhabitants of funny farm?" , "Object of ridicule" .)