Drink, dad? (3)
I believe the answer is:
pop
I believe this is a double definition.
'drink' is the first definition.
(fizzy pop)
'dad?' is the second definition.
(I know that dad can be written as pop)
(Other definitions for pop that I've seen before include "Cartoon sailor (showing amazement?)" , "US fizzy drink and type of music" , "Explode; drink" , "Sound of a balloon bursting" , "Explode; Eton society" .)