Shaming my curvy stepsister with glasses and big boobs

I've been harboring a secret desire for my curvy stepsister for quite some time now. She's a bit of a nerd, sporting glasses and a voluptuous figure, but I can't help but be captivated by her ample bosom. Today, I decided to finally act on my desires and called her to my room under the guise of a study session. Little did she know, my true intention was to have her kneel before me and unleash her inner slut. As she dropped to her knees, her eyes widened in surprise and anticipation. I watched as she eagerly took my throbbing member into her mouth, her fat and chubby body swaying gently. After a passionate blowjob, I led her to the couch, where I ravished her, my cum coating her big tits in a tantalizing display. The sight of her, with her glasses still on, was truly a sight to behold.