Josie's ordinary day ended shockingly when she snacked on a strange chocolate bar that had been left out on the couch. It's odd, weird, and deceptive that someone strategically placed an upscale-looking chocolate in the middle of the couch, where it can be seen by everybody who enters the room. Despite feeling a bit unsettled, her inquisitive nature compelled her to take a few cautious bites of the strange chocolate. She experiences a sudden, strange sensation in her chest. Her bust contracts for a second, then balloons out at breakneck speed, her tits swelling to the point where her shirt is about to rupture and tear! Josie's jugs have grown enormous and painful, and her tits have expanded to their greatest possible size, threatening to pop all the buttons right off her shirt! Pop! Gasping at her size, larger than the rest of her body practically, Josie's new jugs jiggle like delicious juicy melons. Shocked and amazed by the ample new size of her breasts, Josie explores and enjoys her newfound bust size before going to buy some new, un-popped shirts!