Ariel grunted and groaned at first, but soon she got the hang of what she was doing. Wiggling her her body as fast she could, her body inched forward while roughly against the hot and pink walls. The smell Ursula's lust was everywhere and it only made the fire in her loins burn brighter.
She was already deep inside her mistress' pussy, but it was not enough. She said deep, so Ariel was going to go as deep as she possibly could.

Ursula's moans grew more throaty and hoarse as her slave continued. She squeezed her boobs tightly to the point where she yelped in pain, but even that was overlapped by what was felt between her tentacles. At that time her slave's own chest was being swallowed by her cunt. The feeling of her sensitive boobies against those lips and then those tight walls sent Ariel thrashing.

The sea witch was screaming every other second after that. It felt like she had a giant eel wiggling in her cunt. A giant, slutty, red headed eel who was grinding her body against every inch of her inner walls. On the inside, Ariel's head soon bumped against something but immediately afterwards all she felt was an open space and crawled in deeper.

Suddenly, she stopped. A perverse smile came upon her face as she thought up a new way she could please her mistress. Even though she remembered what her mistress said about doing only what she was told, she would gladly accept her punishment after this. Needing at least one taste, Ariel stuck out her tongue and took one lick of the pussy walls.

A shriek not even worthy of Sea Sirens echoed throughout the cave as Ursula came with such a furry. Her slave was quickly bathed from head to toe in her mistress' lust and she squealed happily at this. Soon though, she squealed at her body suddenly surging back and forth. Ursula's tentacles wrapped around her legs and pulling and pushing her in and out.
Ariel was now the world's largest dildo.

Her thrusts were mad and frantic, but Ursula couldn't help it. She hadn't felt this incredible in years, it was all so overwhelming. Everything from grinding every single inch of Ariel against her birth canal to the very thought advertently grinding her cunt into her cunt, it all had her on a sexual high. She had felt that little whore's tongue inside her and while gratified by what she did, even the thought of punishing her in such a naughty way made her juices flow.
"MORE! MORE! MOOOOOOORRRRRRRRRRRRRRE!!!!!"

As enough cum to form a wave errupted from her nether regions, Ursula's tentacles shoved Ariel up so far that she lost her grip.