Neither?

“Hahaha! You've entertained me with your words... you know what? I’m feeling generous now, so you can take your first move!” Mommy Mearest says as she lay down on the ground with her cock pointing upward as she has her arms crossed under her head. “Go right ahead!” She said with a smirk.

Without wasting another second, Skyblue sprints towards Mommy Mearest, her long, luscious legs carrying her across the warehouse floor with incredible speed. She leaps high into the air, her muscular body arching gracefully as she plunges her wet pussy down onto Mommy Mearest's throbbing cock. There's a loud smacking sound as their bodies collide, followed by a groan of pleasure from both of them.

"Oh m--hhhhhhhhhhh~" said Mommy Mearest, giving up trying to form a coherent sentence halfway through.

As Skyblue's soft, plump pussy wrapped around Mommy Mearest's demon core, they both fell into a deep madness, each having met their match. Skyblue moaned out, screaming "THIS IS THE BEST COCK I'VE EVER... FUCK-"
Mearest wasn't much more coherent, panting and heaving at the feeling of Blue's heavenly tract gripping every inch of her elongated meat situation.

The warehouse floor creaked and swayed beneath them, the air thick with the heady scent of sweat and sex. Skyblue could feel herself getting closer and closer to the edge, her body trembling with each powerful thrust. Mommy growled wordlessly , her eyes blazing with lust.

Skyblue's whole body tensed, her fingernails digging into the purple flesh of thighs as her orgasm crashed over her in a wave of pure pleasure. She cried out, her voice muffled against Mearest's chest as her pussy muscles convulsed around the giant demoness's cock.

Mearest felt Skyblue's tight muscles pulsing around her cock. She thrust up into her quivering body, hips slapping against the younger girl's ass as she milked her orgasm. The pleasure coursing through her own body was intense, her cock throbbing as she came, filling Skyblue up with her seed, and she managed to eke out half a sentence: "C-CUM FOR MOMMY!"

Skyblue lay limp against Mommy Mearest, panting heavily, her eyes half-closed. She felt drained but satisfied, her body still tingling from the aftermath of their passionate coupling. "I love you, Mommy," she murmured, her voice barely above a whisper.

Mommy Mearest stood up and removed Skyblue as the latter reverted to her natural thin frame and earth-toned palette. "Now... I would say I won... but something about that little freak of nature makes me think keeping your hooligan around isn't worth it."

"So... Boyfriend? Are you gonna get up?"

Upon hearing his girlfriend's voice, he responded the only way he could remember how... "Beep!"

"Boyfriend, get up! I missed you-"

"Beep!"

"...left?"

"Bop!"

"Left-right-up-down... right!"
"Beep bop bo bop, baw bo po bop bop doot doot alright ahh~"

Boyfriend reawakened from his trance, took one look at Mommy Mearest, then turned back to Girlfriend. "I'm sorry for cheating," he said, "I don't know what happened. I just... I..."

"It wasn't your fault, Bee. You won't have to worry about her anymore."

The pair stumbled home, awaiting their next adventure, not realizing that soon, a true monster would resurface...