I understand. The oral is now over (6,4)
I believe the answer is:
'i understand the oral is now over' is the definition.
I know nothing about this answer so I cannot tell whether it can be defined by this definition.
'i understand the oral is now over' is the wordplay.
'understand the oral' becomes 'enoughs' (I can't explain this - if you can you should believe this answer much more).
'is now' becomes 'AD' (AD, Anno Domini, as opposed to BC, Before Christ).
'over' indicates putting letters inside.
'i' placed inside 'enoughsad' is 'ENOUGH SAID'.
Can you help me to learn more?
(Other definitions for enough said that I've seen before include "No need for comment" , "there's nothing to add" .)