Leslie rolled a measly four, moved her piece, and hesitantly drew a card. She quickly read the card and immediately frowned.
"What? What is it?" Isaac asked, mildly worried for the younger girl.
"It says," Leslie reads. "You find a sale for 2 for 50%. Gain half the weight of two other players."
Lindsey put her hand over her mouth, attempting to stifle her giggles while you ran the the numbers in your head. Lindsey was 215 pounds so half of that would be 108 and with your 40 pound gain total you were about 170 and half of that was 85. That Leslie was about to gain 193 to her 215.
Leslie's body quickly began to swell. Her shirt rode up her expanding stomach, tightening over her now bilging bust. There was muffled snap as her bra gave to her now massive melons, which sagged ever so slightly and rested atop her giant belly. The main show, however, was her lower half. The tight sweat pants stretched even tighter as her already plump pear form fattened into a much bigger pear: her hips widened, her thighs thickened, and her backside plumped, rising her into the air.
Finally the gain stopped as Leslie reached 408 pounds, almost twice her starting weight. The girl finally opened her eyes and let out a small whimper.
"Wow," she whispered. "I'm really big."
"Hah!" Lindsey laughed. "Big is an understatement, fatty!"
"Hey, no need to be rude," Isaac defended Leslie. He felt bad for the girl. He glanced at Leslie, watching her for a moment, The way her breasts shook as she breathed, the way her belly rolled onto her lap, the way her thighs pushed together, the way her giant, magnificent ass pancaked beneath her, the way . . . wait, what was he thinking? This was Leslie, Lindsey's kid sister. Her very fat kid sister. He forced himself to look away to Lindsey.
"Why not? I don't care if I hurt the fatty's feeling. Why shouldn't I be rude?" Lindsey smirked.
"Because," Isaac began, smiling as her realized.