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A specific type of side boob which occurs when a woman is wearing a dress which allows a large amount of cleavage to be shown. This is different to normal cleavage, as when it is viewed from a more side-on angle, the shape of the breast is clearly visible.
Guy 1: "Woah, that girl's got her cleavage on full show!"

Guy 2: "Yeah, I just got some sweet inside boob when I walked past her"
by boob_hawk February 21, 2011
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