Found in Northern Ireland in the company of youngsters, attempting to appear cool? (4,4,3,4)
I believe the answer is:
down with the kids
'attempting to appear cool?' is the definition.
I know nothing about this answer so I can't judge whether this works.
'found in northern ireland in the company of youngsters' is the wordplay.
'found in' indicates putting letters inside.
'northern ireland' becomes 'downthe' (I can't explain this - if you can you should give a lot more credence to this answer).
'in the company of' becomes 'with' (I've seen this before).
'youngsters' becomes 'kids' ('kid' can be a synonym of 'youngster').
'downthe' enclosing 'with' is 'downwiththe'.
'downwiththe'+'kids'='DOWN WITH THE KIDS'
Can you help me to learn more?
(Other definitions for down with the kids that I've seen before include "Expression of disapproval of children" , "acting like teenagers?" .)