Kathryn wants to feel them come together

Jim and Peter's faces were flushed with arousal and exertion, father fucking steadily into son in the big shower cubicle. Their blond hair was dark and slicked down with water and their skin wet, though the shower was off.

Peter closed and opened his eyes. "Gonna watch. Us finish?" Peter's breath hissed out. "Yeah dad, fuck."

"Or help us over the top, Kate?" Jim said. He slowed down his thrusts and looked at their naked guest.

"Oh, wow," Kathryn said. "Your balls are so tight. Can I hold them?"

Peter laughed. "Sure, please."

"Yes, please," Jim said. He paused to let Kathryn join them.

Kathryn stepped up beside them so she could watch their faces. She slid one hand down Jim's butt until she could cup his tight balls and reached another under Peter's belly, down his hard shaft to his ball sac. "This is...this is wow."

Jim started thrusting again. "You're gonna feel us come in a minute. You like that, Kate?"

"Oh yes, oh yes," Kathryn said.

"Yeah dad, yeah," Peter said.

Kate felt every twitch in their balls and their cock roots as they pumped together. Their voices picked up a lower, growling note. Jim's root started pulsing under her fingers.

"Yeah dad, I feel you," Peter said. "Come, make me come!"

Jim's fingers squeezed tight on his son's buttocks as he fucked Peter, sending himself over the top.

"I love you Pete, here I come... arrrrrrrrrggh!" Jim cried out. "Yeah Kate, squeeze!"

Kathryn squeezed on Jim Walker's balls, feeling the older man's cock pulse as he came with his cock deep inside Peter's ass. Peter's balls and root started pulsing in her hand as Jim's come triggered him.

"Oh yeah dad, oh yeah oh AHHHHH!" Peter called out. Hot gouts of sperm splashed Kathryn's arm. She squeezed gently on Peter. She held each man's twitching balls as they came together. Her heart thumped inside her chest. She felt warm all over.

Peter and Jim sighed, their pulses slowing down.

"Thank you," Kathryn said. "Thank you for letting me hold you."

Eventually Jim eased back out. A thick thread of sperm followed the bare pink tip of his cock. Kathryn's eyes widened. Jim's cock had been bare inside his son's ass.

"Give Sally a kiss for me," Jim said.

"And Sandy," Peter said.

"It's been lovely having you come home with us, Kate," Jim said. "I hope you feel welcome and that we'll see you again after the end of the Shipwreck Cruise."

Kathryn smiled. Her fingers tingled from the touch of Jim and Peter's balls. "I do. I do feel welcome," she said. "This has been so wonderful."