Antonio turned his back to her, to scoop something out of the pool nearby with his net. Lisa felt a sudden naughty urge that she could not control.

Her hand went to her bikini bottom, and she pulled it to the side, exposing her freshly shaved pussy to the sun and to her pool boy's back.

"Here's my pussy for you, Antonio," she whispered.

Lisa slipped a finger inside herself while Antonio looked the other way. She pushed it all the way in, past her last knuckle, until her fingertip nestled against her G-spot. She tickled it while admiring the muscles of Antonio's back.

He turned back toward her, suddenly,...