Stop watching TV that shocks the kids (4-2-3-3)
I believe the answer is:
jack-in-the-box
'that shocks the kids' is the definition.
(toy containing a doll as a surprise)
'stop watching tv' is the wordplay.
I cannot really understand how this works, but
'tv' could be 'thebox' (I've seen this before) and 'thebox' is found within the answer.
This explanation may well be incorrect...
(Other definitions for jack-in-the-box that I've seen before include "Toy with pop-up figure" , "One might spring a surprise!" , "Springing toy" , "Sprung toy" , "Surprising children's toy" .)