Expression of annoyance from Ken - gross seafood is ordered (3,8,4)
I believe the answer is:
for goodness sake
'expression of annoyance' is the definition.
I don't know anything about this answer so I can't judge whether it can be defined by this definition.
'ken gross seafood is ordered' is the wordplay.
'is ordered' indicates an anagram.
'ken'+'gross'+'seafood'='kengrossseafood'
'kengrossseafood' is an anagram of 'FOR GOODNESS SAKE'.
'from' is the link.
Can you help me to learn more?
(Other definitions for for goodness sake that I've seen before include "Words of exasperation" , "Really!" , "please!" .)