Order from highwayman having accidentally let dad's red van in (5,3,7)
I believe the answer is:
stand and deliver
'order from highwayman' is the definition.
I don't know anything about this answer so I can't tell whether it can be defined by this definition.
'accidentally let dad's red van in' is the wordplay.
'accidentally' is an anagram indicator (a chaotic or accidental ordering of the letters).
'let'+'dads'+'red'+'van'+'in'='letdadsredvanin'
'letdadsredvanin' is an anagram of 'STAND AND DELIVER'.
'having' is the link.
Can you help me to learn more?
(Other definitions for stand and deliver that I've seen before include "This is what the highwayman apparently said!" , "Highwayman's demand" , "lecture?" , "A demand for money" .)