Mark moaned as I started rubbing his cock through his pants, and looking up at him I asked;

"Yeah, little brother? You want your big sister to take care of this big hard cock?"

"Oh yeah," Mark whispered, his eyes glazed over with lust and his face glazed from his sister's pussy.

I stood up, and walking over to the foot of the ottoman, grabbed the cuffs of Mark's pants and, as he lifted his hips, pulled them off.

"Oooooh look at that." I cooed as his enormous cock sprang free.

Standing up, I unzipped my skirt, and after letting it drop to the floor, knelt at the edge of...