Seeing that Heather meant business, the cute youngster quickly removed the brief garment. When she'd taken it off, Billy just stared excitedly at Penny as she stood with nothing on but a little pair of shorts. The young woman wasn't the least bit overweight, but she still had a trace of baby fat that made her bare thighs extremely soft.

Billy's eyes drifted up over her softly rounded tummy to her cute young tits. They were barely fully developed, but they were firm and round with big, erect nipples thrusting proudly out from her deliciously swollen areolas.

"May I touch them?" Billy asked nervously.

"Certainly," said Heather when Penny didn't answer.

The young woman didn't know what to expect, but a delicious tinge raced from the tip of her tit to her darling pussy when Billy's fingers lightly grazed across her quivering nipples.

"Oh, Billy," she excitedly giggled. "That feels funny."

"Does it feel good?" he asked.

"Gee, yes," answered Penny as the delicious sensations raced through her body.

He was soon squeezing and rubbing her firm tits as she squealed with joy. The cute young woman had never felt anything so fucking good in her life!

"Why don't you suck on them?" Heather suggested to her brother. "I'm sure she'd like that."

"May I?" Billy excitedly asked his cute playmate.

"I guess so," stammered Penny, her entire body aflame with this new-found ecstasy.

The youngster nearly fainted when Billy wolfed one of her big hard nipples into his hot moist mouth. Penny almost blew her mind when Billy began sucking and pulling on her quivering titty-bud with his hot wet lips. The girl was near hysteria when Billy finally released her turgid nipple from his mouth.

"Let's go in on the couch," suggested Heather as the two stared at each other in awe, unable to believe their bodies could give so much pleasure. "I'll teach you lots of neat games to play."