From inside Mary's belly, Brett saw his chance and ran towards the slit in the bottom. Tight as it was, he tried to squeeze himself through with his inflatable mouse tail flicking wildly behind him. Mary, meanwhile, went through insufferable pain while Brett was clawing his way out. "Oh no you don't", she mumbled to herself, quickly walked over to the box of vials, took a Underwear vial from the Clothing section, and as soon as Brett's mouse head poked out she opened his mouth and poured in a few drops. With a smile of satisfaction she said:"Sorry hon, but this is the only thing I let near my groin." Instantly, Brett's skin started turning completely neon pink as his body practically melted around Mary's hips and groin, his arms and legs fusing together around her butt as the fluorescent rubber liquid flowed around the tail and the gaps inbetween filled up with the remaining fabric, reshaping Brett's body into a pair of pink rubber undies firmly formed around Mary's body, with his face still intact in the front. "I hope you like the smell down there", she snickered, "cause you're gonna be there for a while."