Miss Piggy?
I think it could be either:
(Other definitions for goo that I've seen before include "Viscous matter" , "Substance that's viscous" , "Sticky and slimy stuff" , "syrup" , "Sticky stuff or sickly sentiment" .)
'miss piggy?' is the definition.
(a sow is a female pig)
This is all the clue.
(Other definitions for sow that I've seen before include "Female badger" , "Prepare farmland" , "Plant seeds for the pig" , "Female bear" , "farm animal" .)