1.A device, normally a water balloon, that is filled and placed in a bra or a similar carrying device. Then worn in drag to resemble large breasts. Normally resulting in them popping sometime during the wearing period causing more laughter directed at the now deflated and wet wearer.
2.A badly done breast augmentation surgery which made the breasts unnaturally massive, stiff, gave an unnatural iridescent like sheen, and/or a tendency to deflate or burst if not protected.
Dude, my bloob popped when I tried to put them on!