Father’s report (3)
I believe the answer is:
pop
This clue is a double definition.
'father's' is the first definition.
(pop is a kind of father)
'report' is the second definition.
('report' can mean a sudden explosive noise)
(Other definitions for pop that I've seen before include "Old jingle - . . . goes the weasel" , "Cartoon sailor (showing amazement?)" , "Explode; Eton society" , "Palindrome of music for the young" , "Youthful music for dad?" .)