Up to her ears, down to her breasts

"You know," Taylor whispered directly into Zack's ear, "I like being kissed in lots of places. You should explore. Get to know me like we got to know you."

Zack kissed his way up the side of Taylor's neck to her earlobe.

"Oh, good choice," she breathed.

Zack nibbled her earlobe.

"Ooh! Hey, that's not a kiss," she said.

Zack paused. "Whoa, sorry."

"But I liiiiiiike it," she said, drawing it out in her low voice, and ending with a chuckle. "Real gentle with your teeth though."

Zack laughed and nibbled his way up Taylor's ear. The curve felt warm under his lips. Taylor's body moved under his in response. He kissed his way down under her chin and around the other side. This side of the neck was just as sensitive. Taylor breathed more quickly and deeply, and Zack felt her muscles tightening and loosening as she shifted with the sensations. A nibble at her other ear brought another chuckle.

"I can tell you're gonna be good at this," Taylor said. "All I've really had to say is slow down and feel your way."

"Thanks," Zack whispered.

"Hold on now," Taylor said. "I didn't say you were good, just that you were gonna be."

Zack laughed.

"Can I... can I kiss your breasts?" Zack asked.

"Please. Gentle. The nipples are really sensitive today. No teeth," she said.

Zack kissed his way down from his big sister's ear to her collarbone, then to her chest. He paused, taking a breath, admiring the brown, pointy nipples on her pale breasts. His penis swelled, sliding around to point upward.

"Ha-hah!" Taylor said. "Guess you like what you see."

Zack bent his head, kissing his way up the swell of Taylor's breast to her nipple.

"Ah yes, good," Taylor said, soft and low. "You're learning, you're learning." She purred underneath him, her long body tensing and shifting as his lips and tongue strummed out sensations on her sensitive nipples.