Good husband so flipping boring, crikey (4)
I believe the answer is:
gosh
'crikey' is the definition.
(I've seen this before)
'good husband so flipping boring' is the wordplay.
'good' becomes 'g' (abbreviation).
'husband' becomes 'h' (abbreviation).
'flipping' indicates an anagram (I've seen 'flips' mean this).
'boring' indicates putting letters inside (to bore something can mean to drill into it).
'so' is an anagram of 'os'.
'g'+'h'='gh'
'gh' enclosing 'os' is 'GOSH'.
(Other definitions for gosh that I've seen before include "Well I never!" , "Well I'm blowed!" , "Surprised exclamation" , "expression of surprise" , "My goodness!" .)