What rude customer in diner may give and get (5,5)
I believe the answer is:
short order
'customer in diner may give and get' is the definition.
I can't judge whether this defines the answer.
'what rude' is the wordplay.
I cannot quite understand how this works, but
'rude' could be 'short' (short can mean rude or abrupt) and 'short' is present in the answer.
The remaining letters 'order' is a valid word which might be clued in a way I don't understand.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for short order that I've seen before include "Do it for example" , "US cook?" .)