Bringing the boys back to carry the can is disgraceful (7)
I believe the answer is:
scandal
'is disgraceful' is the definition.
I can't judge whether this defines the answer.
'bringing the boys back to carry the can' is the wordplay.
'bringing the boys' becomes 'lads' (I can't justify this - if you can you should believe this answer much more).
'back' shows that the letters should be reversed in order.
'to carry' means one lot of letters goes inside another.
'lads' in reverse letter order is 'sdal'.
'sdal' placed around 'can' is 'SCANDAL'.
Can you help me to learn more?
(Other definitions for scandal that I've seen before include "Outrageous event" , "Public disgrace" , "dirt" , "content of 3 [RED TOPS]?" , "Shocking disgrace" .)