Roly Poly watched with amusement as the woman before him, now much shorter than before glugged down more of the flask's content and let out a satisfied "Ah!" as her body began to fill with fat. At first, it was only a tad bit noticeable, but in a cartoonish wave with a silly sound of BLOOPMH, her belly, butt, thighs, and legs all swelled up to obese proportions. Her face pudged up, gaining a double chin and cherubic cheeks that pushed out as she licked her lips and let out a healthy burp.
"Woah. What is this stuff even supposed to do to help disguise me?" She asked. She looked down and let out a shocked sound.
"Well, I mean, it changes you, but you were already pretty chubby so a few more pounds won't hurt, right?" he said, speaking new truth into her ears as she looked at the fat body. For a moment it was entirely foreign, but then suddenly it was only about 60 pounds heavier than she remembered being.
"Well, not sure if that's the best wait to hide me." she said. "I still look like me, just a tad bit chubbier." she noted. "But this is cool. Can it change other things about me?"
"Oh without a doubt. You can guide the changes if you think about what you want to change while you drink." he instructed. He had left that part out until he felt like she was ready to play along. Now she would help him make her the silliest disguise ever, and he was delighted at the look on her face as she listened. She was eager to continue.
"Well, let's see. What'll make him not recognize me at all." she pondered before letting out a "aha!"