"Big sister loves you... I'll make it more slippery with oil and stroke your head forever. You're such a good boy. Good boy, good boy..." She poured plenty of oil on the head of his super sensitive glans, and used her palms and fingers to the fullest, reaching all the way to the urethra deep inside his slit, gently yet mercilessly caressing it until it seemed like it might burst, forcing his erection to burst. Of course, she used a generous bottle of oil to stroke his head in an endless, pleasurable way!!