Neck injury from a couple of cats? (8)
I believe the answer is:
whiplash
'neck injury' is the definition.
(I've seen this before)
'a couple of cats?' is the wordplay.
'a couple of cats?' means two substitutions for 'cat'.
'cat' becomes 'whip' (I've seen this before).
'cat' becomes 'lash' (I've seen this before).
'whip'+'lash'='WHIPLASH'
'from' acts as a link.
(Other definitions for whiplash that I've seen before include "Injury to neck caused by sudden jerk, as in car crash" , "Injury caused by a prang?" , "result of car crash?" , "Sort of injury" , "Stroke of punishment" .)