Aunt-numbered.

You jump into the pool, nearly on top of the two girls, and you hear Karen laughing. "Oh girls, I think you're in trouble now."
You snag each girl under an arm in headlocks, dunking them both under the water. They thrash for a second until you let them up. Riley smacks your chest and squirms, and you slide your grip down to around her shoulders, trapping her arms. Zoe tries to escape but you snag a foot and pull her from standing to swimming, towing her with you and Riley towards the deep end.
"Shark time!!" You dive deep under Riley, releasing Zoe as you swim up under Riley, boosting her off your shoulders as she jumps almost completely out of the water, laughing.
Suddenly, behind you in the deep end, you feel a splash as Karen joins the fray.
"We'll keep him busy Riley! Get the noodle!" she points to the pool noodle floating at the shallow end.
Karen and Zoe each grab an arm, and even though you could easily fight them off--you think--you let them pin you down. Besides...Karen's big tits, and Zoe's, are both rubbing pleasantly against your back, and they feel nice. You snake a hand down to grip each of Riley's aunts on the thighs.
"Don't try to frisk your way out of this beating, Jameson." Karen whispers in your ear. You suddenly feel two hands grab at your junk at the same time, and both Zoe and Karen giggle.
"Great minds..." Zoe whispers.
"I mean, he's ****, you have to go for it, right?" Karen's reply whisper is devious and playful.
Riley is approaching with the noodle, and puts on a mock serious tone.
"James Riley Sinclair... for your crimes, you are sentenced to three bops!" She smacks your head with the noodle. "One!...." She smacks your face, not too hard though. "Two! Please turn the prisoner around and present him, ladies!"
"Wha..." you gasp as the two ladies spin you 180 and hoist your ass out of the water. You didn't think they had it in them. You shriek as Zoe pops the button on your shorts, and pulls them down to expose your butt.
"HEY!"
"THREE!!" Riley wacks your exposed butt full ****. It's just a pool noodle, but you still yelp in pain.
"That was uncalled for!" you yell, trying to pull your shorts up. They got tugged down far enough that your cock has popped free, and once again.... two sets of hands clasp around it.
"Oooh..." Karen whispers.
"Great minds, again, eh Karen?" They laugh and release you, and you pull your shorts up, embarrassed.
Riley hugs you from behind. "It hurt me more than it hurt you, daddy! Isn't that what you always used to say?"
You suffer the indignity in grumbling silence. All three girls hug around you.
Life ain't that bad, you decide.