Then she felt her brother's face pressed between her shimmering buns. "Nuh-h-h-h-h," she groaned, blushing even more as she heard him sniffing her crack. How could he do such a thing!

"For a kid, you sure got a nice ass," Mark said, and began kissing her warm inner curves.

Linda, much to her shame and horror, couldn't help thrilling to the feel of his soft lips roaming across the trembling flesh of her ass. Her little movements kept shoving her clit into the carpet, along with her rigid nipples, and she knew if she allowed herself to ride with it, she would cum.

"How does it feel, Sis?" Mark asked, dragging her soft cheeks apart to expose the wet, pink circle of her asshole.

"Ohhhhhh, please," Linda whimpered as she felt her asshole gaping from the pressure of his fingers. Why was he paying so much attention to her ass? If he was going to bust her cherry, why didn't he play with her pussy a bit?

"Tasty-looking asshole," Mark mused, as if talking to himself, and then Linda gave a long, low wail of shame and shock as she felt her brother's hot tongue laying her shrinking bung.

"Aaaaaah, no-o-o-o-o! Stop!" The embarrassed teenager cried, squirming fiercely. She could feel Mark's hard-soft tongue working into and around the exposed, throbbing opening of her bung. He even wiggled the tip inside a few times. In a matter of minutes, Linda was sighing and panting with lust. She was so hot she no longer felt embarrassed. She wanted her dirty older brother to eat her asshole forever!

"Starting to like it, huh, Sis?" Mark teased. "I knew you would. All you bitches love a man's tongue shoved up your ass, but none of you will admit it!"

"Oooooo," Linda sighed loudly as Mark's wet lips fastened against her throbbing bung. He sucked the raised rim of her asshole gently while probing the funky center with his tongue, and Linda's ass rotated in slow circles against his face.