Big head, little. head

 Old Priam didn't need another son;
his fiftieth was sent to tend the flocks.
While Hector learned how City States get run,
young Paris strained to sort his sheep from rocks.
A wiser man'd have dodged when trouble loomed
Three goddesses, each known to nurse a grudge!
But Paris chose, and sealed his city's doom.
The preening imbecile liked playing judge.
What Helen saw in him, it's hard to say
she'd chosen Menelaus, long before.
but Aphrodite'd snatched her wits away
committing the Aegean world to war.
Heroic epic sings the fall of Troy
but edits out the hormone-addled boy.