Be punished for putting some pins in the bed! (3,2)
I believe the answer is:
cop it
'be punished' is the definition.
(I've seen this before)
'putting some pins in the bed' is the wordplay.
'some' suggests taking the first letters.
'pins' becomes 'i' (I can't justify this - if you can you should believe this answer much more).
'in' is an insertion indicator.
'the bed' becomes 'cot' (cot is a type of bed).
The initial letter of 'putting' is 'p'.
'p'+'i'='pi'
'pi' put into 'cot' is 'COP IT'.
'for' acts as a link.
Can you help me to learn more?
(Other definitions for cop it that I've seen before include "Get it in the neck" , ""get in loads of trouble!"" , "Be punished" , "Get into trouble; be killed" , "Suffer the consequences!" .)