Song: "Down South" (2012)

What does the first part of this even mean? Is "fish" a euphemism for her never-healing hatchet wound? Does 'he' want to form a successful rock band only to have Iggy venture out on her own to do country songs? Or is it that thing where you pull your scrotum over your penis and then kind of squeeze the blob so it puffs out like a blowfish? In any case, it's gross because she juxtaposes "fish" with talking about her pubic region.