I love licking my sister's clitoris while she plays the melodica! When she uses diaphragmatic breathing to play, stimulating her clitoris as her diaphragm expands causes her tone to vibrate and her clitoral tip to quiver. Licking or sucking on that clitoris makes my sister start to writhe her hips. Yeah, she's reached her limit of endurance. But I keep tormenting her, making her cum over and over again!
