My stepmom's forgetfulness leads to a steamy birthday surprise

Celebrating my birthday was supposed to be a joyful occasion, but my stepmom seemed preoccupied. As I tried to open my presents, she kept interrupting, her forgetfulness becoming increasingly bothersome. But when I finally unwrapped the last gift, I found something that wasn't meant for me. It was a lingerie set, meant for my stepmom. Intrigued, I confronted her about it. She blushed, admitting her mistake. But as she reached for the box, her bra slipped off, revealing her natural, puffy tits. I couldn't resist. The moment her nipples met my lips, she moaned, her forgetfulness forgotten. What followed was a wild ride of groping, riding, and a rough rimjob that left me in a state of bliss. Her mature, milfy body took me on a wild ride, making my birthday a day to remember.