Possible Clues:

• O, there's nothing in the shape of an egg here
• Old, empty and sort of like an egg
• Shaped like an avocado
• Like most acorns
• Nothing repeatedly almost round
• Nothing - just nothing - in the shape of an egg
• There's nothing, nothing there in the way of an egg
• Poet's written about love of a curvy shape
• Sort of circular
• Like L'eggs containers