Panics but makes baby burp! (4,3,4,2)
I believe the answer is:
gets the wind up
'panics' is the definition.
I know nothing about this answer so I cannot judge whether it can be defined by this definition.
'makes baby burp' is the wordplay.
I cannot really see how this works, but
'makes' could be 'gets' (getting is a kind of making) and 'gets' is found within the answer.
This may be the basis of the clue (or it may be nonsense).
'but' is the link.
Can you help me to learn more?
(Other definitions for gets the wind up that I've seen before include "becomes nervous" , "Helps baby after meal" .)