His Mother of course

Billy didn't have to wait long when he heard his mother come upstairs to do his laundry.

"Any socks laying around sweetie?" she asked dully as she set the hamper down, picking up clothes strewn across the room. Billy silently sat on the edge of his bed and looked at her, focusing hard on his trance as he quickly entered her glowing door.

"Mother, Show me your breasts." he commanded.

The moment those words left Billy's mind his Mom paused abruptly, her outstretched hand even stopped mid reach as she appeared awkwardly frozen in place. Billy held his focus, unfazed as his mom slowly stood and faced him, her distant expression just like Sara's as her hands moved under her shirt. Billy could feel his pulse race as he watched his mother raise the shirt over her head, her hands coming around, unclipping her heavy duty bra letting it fall from her shoulders.

Billy was filled with joy as his mother stood topless in the middle of his room, her giant, delicious looking breasts jutting out towards him in obscene display. This time he didn't hesitate as he pulled out his phone, taking a satisfying flurry of snapshots as he began typing her attributes with a flurry. "Dark chocolate colored areolas, large, slightly oval shape and bumpy texture. And her nipples..."Billy looked up from his phone. by now he was clearly excited, his cock clearly tenting in his pants as he zeroed in on the thick eraser sized nubs pointing from each of his mums large areolas.