The following passages were taken from a favorite story of mine entitled, "Sitting pretty `revisited`", by doc.   I hope you enjoy.

"Nanette began to slide her crotch gently across Kevin's nose and mouth. The light contact added her taste to the heady scent that had already taken Kevin beyond the point at which he could have offered resistance. She had him. Nanette's face was beginning to colour as she turned and looked across at Helen. Her breathing and her glazed expression told Helen that her friend was already close to orgasm."

"Her panties, her thighs and her strong feminine scents filled his thoughts.. Although his breathing was difficult, he started to relax."

"Helen gripped him firmly, pushing her knees under his head to stop him from forcing his head back down to the cushion. Her initial revulsion at seeing Nanette's exposed anus, had turned to fascination. She felt her own breathing quickening, and her pussy juices beginning to flow. Nanette moved her anus gently against Kevin's nose and gasped. God this felt good! She again held her cheeks apart as she began to move in a circular motion, gently contacting with Kevin's nose."