Stay out of it (Phoebe wins)

You start to move in and help, but Trish's flailing leg kicks dangerously close to your groin in her struggles, and you decide that this is a time to exercise the better part of valor. You stand ready in case things get really serious, but from the looks of it neither girl seems to pose the other a serious threat.

Which is not to say they're not going at it tooth and nail! After rolling briefly on the couch, Trish manages to shove Phoebe off onto the floor. Before Phoebe can recover, Trish leaps at her and pins her down, her skirt snagging on a loose upholstery tack and ripping in half, trailing a thread behind her. Just as it seems that Trish has the upper hand, Phoebe rears up and bites at the only thing she can reach, which turns out to be Trish's naked breast.

"Aaaaaaaaahhhh! You fucking BITCH!" Trish screams, and slaps Phoebe across the face. With one of her wrists free, Phoebe is able to push Trish away and get to her feet. They lock arms and wrestle for a moment, shoving each other around the room. Trish's already damaged skirt rips further and falls off completely, revealing white satin panties, but neither of them notices her disintegrating wardrobe.

Finally, Phoebe manages to back Trish up to the sofa, where she trips on her own discarded bra and falls backward. Phoebe is on top of her in an instant, pinning her wrists down with all her strength and pushing her knees into Trish's thighs to hold her legs. Trish struggles hard, but it's clear Phoebe has the upper hand.

"Gotcha now, bitch," she whispers.

"You're a cheap fucking slut, Phoebe," Trish replies as she continues to struggle in vain.

"A slut, am I?" Phoebe asks in a faux-innocent voice. "You're goddamn right I'm a slut, and I want some fucking cock. I've had enough pussy to last me a lifetime."

"That figures," Trish says. "I always thought you were licking Miss Stoller."

"Are you kidding me?" Phoebe laughs. "She's such a prude, she won't even use a vibrator. Besides, there's plenty of fresh, young pussy around here." Suddenly her eye gets a glint, and she looks appreciatively at Trish's mostly naked body pinned below her. "In fact, I think I see a cherry ripe for plucking right here."

"Don't you even – mmph!"

Phoebe leans over abruptly and presses her mouth firmly down on Trish's, shoving her tongue between her lips. Trish tries to push away, but she can't seem to make any headway, and it soon becomes obvious that she's not actually trying that hard.

After a moment, Phoebe lets up. "You hurt my titty, you fucking cunt," she whispers. "Kiss it and make it better."

"You hurt mine too, slut."

"You did it first. Kiss it better now, or I'll smack your ass."

Phoebe pushes her tits into Trish's face, and though Trish's glare could kill, she takes Phoebe's nipple into her mouth and sucks hard. Phoebe stiffens suddenly, biting her lip.

"Oh, fuck yeah, that's good… I like it when it hurts, all my friends are too fucking soft."

"I'll hurt you as bad as you want, slut," Trish mumbles around her mouthful of tit. She yanks a hand free and brings it up to slap down hard against Phoebe's bottom, making the hot blonde squeal with delight.