A women's vagina.
Dialog from the movie Role Models:
Danny: I'd love to see you. (Talking to ex-girlfriend)
Augie: *Whispers a suggestion* And your whispering eye.
Danny: And your whispering eye.
*Closes phone*
Danny: Whispering eye?
Augie: It means vagina.
Buy a
Whispering Eye
mug!