My goodness! Am I so well-mannered? (8,2)
I believe the answer is:
gracious me
'my goodness am' is the definition.
I don't know anything about this answer so I can't tell whether this works.
'i so well-mannered?' is the wordplay.
I cannot really understand how this works, but
'i' could be 'me' and 'me' is present in the answer.
'well-mannered?' could be 'gracious' (I've seen this before) and 'gracious' is found in the answer.
No letters remain.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for gracious me that I've seen before include "Gordon Bennett" , "Mamma Mia!" .)