Sandra was in another world as she wandered around the gym doing things she had to do. All the while she was so aware of Robin's thong that she was wearing. It felt different to her everyday knickers. As she walked the air-conditioned air made goose bumps on the exposed flesh the thong revealed. Her loose nylon gym shorts brushed her bare flesh in a most arousing way. She could feel the thin strip of material riding up between her buttocks and the sodden gusset squelching against her neatly trimmed pussy.
One by one the gym members drifted away and Paul and Sandra tidied up to close the gym for the night.
"Still got her thong on, have you?",asked Paul
"Mmmm, hmmm", hummed Sandra and cheekily gave him a flash down the waistband of her shorts.
"Feels bloody lovely, I can tell you".
"I'm actually horny again" said Paul.
"I think I'll have to see if Lorna wants an early night when I get home!"
"Really?". "Do you remember what we spoke about the other day? Well I dare you to do it. Give us your phone and I'll set it up"
Paul handed Sandra his mobile and she set to work adjusting the settings. "OK, my number is on speed dial, one key call... and the screen won't show anything. Now promise you'll do it?"
"If I can, I will" Paul replied.
Sandra slapped his bum and picked up her bag.
"See you tomorrow – but I'll call you later!"