Amusing spot to get the elbow? (5,4)
I believe the answer is:
funny bone
'the elbow?' is the definition.
The definition and answer can be both body parts as well as being singular nouns.
Perhaps they are linked in a way I don't understand?
'amusing spot' is the wordplay.
'amusing' becomes 'funny' (I've seen this in another clue).
'spot' becomes 'bone' (I can't explain this - if you can you should give a lot more credence to this answer).
'funny'+'bone'='FUNNY-BONE'
'to get' acts as a link.
Can you help me to learn more?
(Other definitions for funny bone that I've seen before include "found up one's sleeve" , "exposed nerve" , "Humerus" , "part of arm" , "Part of elbow with sensitive nerve - hilarious" .)