No

You didn't want to be left out this time so you walked toward them. You reached Tania's back while she was resting on Sophie, moved your hands from behind her back to her lower belly, pressing yourself against her back again and forcing her against your little sister.
"Hmm... What to do ? Are you really this kind of Futanari Tan~ ? You've been jumping my sister a lot even though you have me... I'm starting to think you're really an unstoppable perverted futa..."

Tania opened her eyes and tried to look at you despite the aches in her ballsack. Her voice was weak but still audible and she tried to explain the situation.
"N-no... It's not... like that, I swear... It was just an acci- eek!"
You interrupted her sentence by grabbing her dick hard with your right hand before squeezing it against Sophie's belly button.
"An accident right ? Is this hot and hard dick throbbing against my cute little sister's stomach an accident aswell ? Or did you really try to have your shot at her?"

Sophie blushed when she noticed Tania's member pressing against her sensitive belly button. She looked back at her face with a weird mix of disgust, frustration and expectation writen on her face.
"Disgusting... You're really just a rapist like others futanaris."

"N-no ! I am not ! This is just because you keep-"
You squeezed her hard dick in your hand again and silencing her with gasp.
"You're too horny for your own good~ Sophie, I think we need to punish her before we go to the bath or else my baby might end up being arrested and we could fall with her" Sophie looked at your face and immediatly understood what you wanted to do the moment you smiled at her. The idea of hurting Tania again somehow just turned her on aswell, and you could clearly notice the shift in her expression.

"No... Wait..! "
But the outcome was decided way before she even touched Sophie. Tania was trapped between you two, flustered and hoping it was all just a joke. Sophie and you brought both your knees back before giving each other a nod. *CRUNCH !!* Both of you smash Tania's balls at the same time from each side, making a loud crunching sound that reverbated between Tania's legs.

"Ahhghk-ngh...!"
Tania's tongue stuck out and her eyes widened when she felt her balls being crushed between two knees, she didn't even get to recover from this, that you whispered «Again» to Sophie which nodded happily. You wind up and strike again, feeling each other's knee through her ballsack this time. You could feel Tania's muscles seizing up briefly as a systemic short-circuit traveled up her spine, locking every muscle in her body from the crushing force in her really sensitive gonads. The remaining sperm she didn't get to ejaculate this morning spurted out onto Sophie's stomach and her own. Slowly her moans faded into shallow gasps, her eyes rolled back in her eyelids while her muscles went limp between your bodies, Tania lets out a final sigh of agony, and just like that, she passed out squeezed between your little sister and yourself.

At the same moment two women enterred the changing room and saw the three of you glued together. Tania's head slumped onto Sophie's breasts hidding her ahegao from the two women. Sophie and you smiled to each others and started crushing Tania's testicles with your knees by grinding them together in a circular motion, thoroughly, making her hips wiggle at the same rhythm. It turned out it was pretty arousing for Sophie too to crush your girlfriend's balls. On the outside it just looked like 3 naked friends hugging each others really tightly, even if in reality Tania's nuts were having a meticulous relooking.

The two girls peacefully left in their towel without questionning it. You looked back at Sophie and she looked at you too. You two started giggling about what happened just now. Both your sister, and you walked back, then gave Tania a final synchronised kick to her balls, expelling what was left inside them in a powerful jet of semen.

Tania started sinking down but Sophie catch her in extremis by the nipples. She looks down at the dangling futanari with a smirk, pulling on her nipples and shaking her big milk jugs left and right— enjoying the motion of her body swaying along her tits. You looked down at Tania's ass pointed toward you because of the position Sophie was holding her in. You gave her balls two more kicks watching her body reaction, but she didn't seem to be responding anymore.

"Awh~ She is out"
you say mockingly, before Sophie lets Tania sink down on her own laps then crashes her face down on the floor. She passed out, gagging and convulsing uncontrollably, while her balls jiggled between her legs following the motion of her hips— Her dick still leaked a small puddle of cum beneath her.

Sophie looks down at herself after feeling a hot viscuous subtance on her stomach.
"Ugh... This bitch came on me... And it smells..."
After hearing that, you walk to Sophie, thrust your finger inside your sister's belly button making her flinch and freeze. Your finger slowly slid along her skin, wiping the cum on it's way before you bring it back to your mouth and lick it right in front of her eyes.

"Smells and tastes good"
you said with a smile. Sophie's legs crossed slightly at your teasing. You successfully made her curious about Tania's cum. She took a little on her stomach and licked it too out of curiousity, but immediatly regretted it...
"It tastes weird... And bitter..."
She muttered while pulling her tongue out in disgust. It made you laugh how Sophie wasn't used to sperm's smell and taste. She must not be experienced there. You direct your attention back to your girlfriend and nudge
her butt.

Sophie looks surprised to see you do that to her but since she didn't like Tania anyway she didn't question it.
"Do you think this will be enough to stop this horny beast..?"
she asks nudging Tania with her feet.

"Not at all. This is my girlfriend we're talking about, she will be hard again in less than an hour. Let's just remove her top and carry her to the bath without exposing her... Precious part"
your smile is surprisingly warm and caring for someone that crushed her partner's balls not too long ago.

"I really don't see what is so special about this rapist"
Sophie complained but helped you anyway.