Unbeknownst to me, my mother-in-law had a secret fetish for balls. I woke up one morning to find her tongue teasing my sack, her warm breath sending shivers up my spine. As I hardened, she took me into her mouth, her expert lips and tongue bringing me to the brink. I tried to warn her, but she only moaned, eager for my load. Twice she swallowed me whole, her mature throat milking every drop.