A bustier or a low cut top paired with a push-up bra, creating the effect of breasts served on a platter, ie "Would anyone like some boobs?"
Can I wear this or is it too boob tray for brunch?
A female whose boobs are so big that she could use them as a tray to hold a cup, bottle, etc. Not necessarily big, but usually, and parallel to the ground...
"She has a Boob Tray,"