Tia's Troubles

"Still eager as ever, aren't you?"

Celestia was laid on her stomach, legs apart, head resting on a large pillow. Behind her and laying on the lower half of the bed, Luna had her sister's substantial ass cheeks cradled between her hands as she dug her face deep into the mass of booty meat.

"Mhhhhhhm."

Every little movement of her head sent little ripples through Celestia's perfectly smooth, spherical behind, Luna's fingers digging deep into its soft abundance. She breathed in, nostrils filled with the sweet, incredibly pleasant scent seemingly woven into her sister's being, and drew back. She watched the huge derriere before her, marveling at the way it bounced, rolled and shook with every movement of her hands.

"I have to admit that I did rather enjoy being a hundred feet tall, but it's nice to be back to normal. Lets you do things like... whatever it is you're doing to me now."

Luna chuckled and looked up.

"Normal, sister? You've always been quite well-endowed in this compartment,"

She gave Celestia's big ass a good, hard squeeze, a little groan escaping her lips.

"But there's definitely more here than there used to be. I wouldn't say you were completely back to normal."

"Are you complaining?"

Luna lowered her head, bringing it close to her sister's perfect rear once more.

"Does this feel like complaining to you?"

She dove back in, burying her face into the warm, soft embrace of those twin pillows.

"Mm, I suppose not."

Shifting down a little, Luna began to lap at her sister's nethers, tickling her labia with her lips before diving right in with her mouth.

"Ooooh, yeeees..."

Luna's tongue pranced and curled back and forth, from side to side, as she explore her sister's moist passage with her mouth.

"Nngh, gah, I'm getting close... already..."

Luna began licking more vigorously and Celestia cried out, her pussy convulsing and her entire crotch tingling. A hot, sticky wave of femcum splashed against Luna's lower face, and she swallowed a good-sized mouthful or two. Then another mouthful, and another, before drawing back. Celestia continued to groan, reflexively clenching her buttocks which jiggled and shook each time, accompanying another half a dozen waves of cum rushing forth and soaking the sheets.

She drew back, wiping her face, before laughing out loud.

"What the heck was that?"

"Like you said, not completely back to normal."