Closing the legs

Lauren groaned as she closed brought her thighs together, then spread them back apart. Everyone was blatantly staring. Lauren looked down. Her belly hung down slightly between the straps of her tanga. Her meaty thighs were pushed out by the seat, making them look fatter than ever. And between them, her barely covered crotch, with the bikini digging in so deep it was prying apart her lips. Oh god, how could this be happening?!

"Keep going!" Nancy commanded.

Grunting, Lauren squeezed her legs together again. When she opened them she heard laughter across the gym. Confused, Lauren looked down. Oh no! Her lips had totally spilled out the sides of the bikini, and were hanging exposed! Oh god, she had that roast beef curtain look again!

"Why are you stopping?" Nancy said.

"My... my crotch!" Lauren said frantically.

"Well, YOU'RE the one who came to the gym dressed like that!" Nancy pointed out. "Now keep going!