Alien Sex: It Does A Body Good

It took a bit of convincing to let the "kids" give up their turns with the men so that Kara could get a chance but in the end the elders of the giantesses were able to get their broods to back off and let the Kryptonian have a go. And they all had to admit it was rather interesting because Kara, being Kara, had decided to take their advice about getting 'ahead of the curve' and go full throttle with it.

"It having sex with one of them will keep the beast at bay," she said as she wiggled her plush full tush against Barry's stomach before slowly sinking down on his girth, "how about two?"

Because she let Barry slide right into her asshole. It was Oliver who was grabbed, his cock sliding into her pussy as the two men split roasted her.

"FUCK!" Kara screamed in bliss, throwing back her head. "That... oh fuck that feels good!" The two giants quickly found a rhyme and began to rock her back and forth, Kara stuck in the middle threading her fingers through her hair, moaning in delight. "So... so fucking full!"

"God this is hot," Sara said as she sat in front of her sister, Laurel lazily playing with her little sister's tits. "And when did the rest of you decide bi was the way to go?"

"Only so much dick to go around," Felicity reasoned as she broke away from kissing Lena. The three tribes had ended up snuggling up to each other once it was clear Kara was going to be using both men and thus it was a tangle of naked hairy limbs and bodies that watched Supergirl get fucked by the Green Arrow and the Flash. "Especially when she's so greedy."

"That's my sister," Alex said even as she mentally thought about taking her turn next and trying the same thing as Kara.

"Wait till one of them puts a baby in you," Iris said. "Nothing is fucking hotter than pregnancy sex."

"Speaking from experience?" Lena asked, unable to stop herself from playing with her clit as she watched her friend (and the woman she'd had a crush on for a while) get utterly filled. Kara was normally bubbly and goofy but right now she was just a wild sexy beast and it was driving Lena wild-

"uh... is that normal?" Alex finally asked as she noticed that the cum Kara was gushing out of her well fucked snatch was glowing... rather similar to the glow of the Star Labs experiment that had altered them.

"Don't remember that!" Helena said, trying to get up only Dawn had been lying on her suckling at her breasts so it wasn't easy. By the time she managed to rise up Kara let out a thunderous scream as she came... and Barry and Oliver shuddered as her glowing cum sprayed onto their bodies before slowly soaking into their skin.

And a few seconds later their eyes glowed red with heat vision.

Kara let out a loopy, cum-brained giggle as she plopped off of the two dicks and fell to the ground, lovingly stroking her pussy. Helena hurried over to check on her, concerned.

"What the fuck was that?"

"Big Kara... no want gentle," Kara said and Helena gulped as she realized that sometime during the double penetration Kara had gone cavewoman. "Me make tribe STRONG."

"...translation?"

Felicity swallowed. "I think... whatever made us grow... let Kara's cavewoman give the guys her powers."

"You too," Kara said with narrowed and lustful eyes, slowly standing up with Barry and Oliver also staring at the now startled giant women. "Strongest tribe."