Dad to explode (3)
I believe the answer is:
pop
This clue is a double definition.
'dad' is the first definition.
(I know that dad can be written as pop)
'to explode' is the second definition.
(I've seen this in another clue)
(Other definitions for pop that I've seen before include "Thus goes the weasel in children's rhyme" , "Music with mass appeal" , "Youthful music for dad?" , "Explosive sound; drink" , "Old jingle - . . . goes the weasel" .)