The aroused girl let out another squeal of excitement when her body suddenly exploded into a bone-rattling orgasm, the first climax she'd ever had without using her own fingers. She kept coming for what seemed like hours. When it finally began to diminish, she gave him a deep tongue-sucking kiss.

Glancing down, she was once more aware of the big, hard cock that was throbbing up from between his legs.

"Bob," she whispered as she began sliding his velvety foreskin up and down over his throbbing prick. "Would you like me to suck you off?"

"What in the hell do you know about blowjobs?" he demanded.

"Joyce told me."

"You mean your friend with the big tits?"

"That's the one," she said, giggling as she lovingly stroked his tingling fuckshaft.

"Does she suck guys off?"

"She said she really digs it, and she loves to fuck, too."

"Do you think she'd go out with me?"

"I'm sure she would!" she said. "She really thinks you're neat."

Lowering her face down toward her brother's hard cock, she slowly pulled his foreskin back until his big, purple prickhead was revealed. She heard her brother moan softly when she lowered her moist mouth down over his sensitive cockhead.

"Oh, Christ, Sis!" he whimpered as she began sucking gently on his cock. "That feels so fuckin' good!"

Terri began a slow sucking action that had him writhing all over the bed. Her head was soon bobbing faster and faster as she sucked more passionately on his big cock. Rob's entire body was trembling and jerking from the heavenly sensations created by his cocksucking sister.

He could feel his climax building deep in his balls. As his ejaculation drew closer, he unconsciously grabbed Terri's head, shoving her sucking mouth down tighter over his throbbing fuckshaft.

"Jesus Christ!" he roared as he started shooting his wad.