"Fffffuck!" Sarah moaned, as Beth blew again across her chest, her nipple hardening even further.

Smiling, Beth opened her mouth and gently licked across her sister's nipple, closing her mouth around it and gently sucking, still twisting and pulling at the other nipple. Breaking the suckle, Beth glanced up. "Do you like that?" she asked, indicating her other breast where the nipple was being softly abused.

"Fuck yes," Sarah said, softly fidgeting around.

"Is your pussy wet?" Beth asked, drawing the nipple back into her mouth.

"Fuck yes," Sarah said again, faster this time.

Smiling, Beth finally released her sister's nipple, but traded breasts and began to gently pull and...