Zack shoots!

Zack whimpered. He knelt behind Hannah, holding tight to her hips to steady himself. Don't move, be a statue, he thought. Gavin thrust up from below. His balls kept hitting Zack's. Zack's cock swelled again in Hannah's ass. "Ohhh..."

"Eeee..." Hannah said. "Yeah, just stay like that, stay there, Zack."

Gavin thrust away steadily, his world filled with Hannah, her beautiful face flushed with arousal, eyes hooded with pleasure. He felt Zack there too, vaguely, a weight on the bed, a bulge in the wall of Hannah's cunt, a pair of balls big enough to brush past them each thrust. "So good. Yeah," he murmured. "So good."

"Uhhh," Zack growled. Think of math, think of anything else, he told himself.

Gavin thrust up, high, hard and deep. Hannah moaned and cried out, "Yes, yes, yes!" Her ass squeezed down on Zack's shaft. Zack felt Gavin's cock moving near his. Gavin's balls hit Zack's again, twice, three times. "Yes Gavin, harder!" Hannah cried. Hannah's butthole squeezed down again.

"I'm gonna...AH!" Zack cried. His hips bucked forward and back, his cock firing in the hot depths of Hannah's ass. "Ahhhh!" So good, so good... He thrust forward, bottoming out, deep inside as he shot off again and again.

Zack stopped, breathing quick and shallow, as Gavin kept pounding up from below.

"Score, ha ha!" Hannah called out. "Stop a minute, Gavin."

The three of them paused together. Waves of warm sensation swept over Zack after his orgasm. In a minute, his cock softened.

Hannah put a hand back and pinched the base of Zack's cock between her finger and thumb. "Okay, ease on back," she said.

Zack withdrew from Hannah's ass, feeling a little jolt as his head popped out of her ring. Hannah let him go. He moved to the side and sat down on the bed.

Hannah looked back over her shoulder. "That was pretty good. Well, after that fast start, anyway." She rubbed her hand over her butt. "Crazy times." Hannah lifted her hand up and made an imaginary tally mark in the air. She winked and grinned. "Crazy good."

Zack smiled and shook his head. "Yeah," he said, not knowing what to say.

Hannah turned back down to Gavin. "Still with me?"

Gavin smiled. "You know it," he said.

"Mm-mm, I feel it," Hannah said. "You're hella fun for a virgin, really."

Gavin blushed.

"No really," Hannah said. "Let's get you off, huh? You want to be on top?"

Gavin blinked. "Um?"

Hannah chuckled and said, "Dreaming about something special like taking me from behind, or over the dresser or something?"

"Um, um..." Gavin said.