Inside Sally Acorn's ass Traveling the Multiverse chapter 17 by dellobenedetto

Suddenly, Sally Acorn bent over, showing off her rear to you, in all its shapely glory. "Climb in."
"W-whuh?" you stammered, blushing profusely as you took in her juicy booty.

"You're not that fast, right? You'll be able to keep up better if you're inside me."

"I-inside... y-you...?"

"...Alright, if you're gonna be so flustered about it, here."

All of a sudden, the chipmunk leapt backwards, and near -instantly caught your head in her booty, which quickly began schlorping the rest of you up. It felt incredibly soft, and you could hear her doing her best to not moan as your body goes inside. Thankfully, once you are in, it's remarkably clean... though cramped. "A-ah. W-wasn't... expecting you to just... do that..."

"Hey, there's a reason I only wear this much most of the time," Sally comments, patting her butt as she feels you squirm into a more comfortable position. "In fact... Probably best I don't leave these guys here, either, if they are in fact working for Eggman." She walks over to the two mercs, hefting their unconscious bodies before bringing the first to her chest. Gently pushing it against her tit, before gasping as it began pulling him inside. Her breathing grew a bit faster as he entered, before getting started on the second in the other boob, leaning against their truck for support. Soon, the two were imprisoned in her boobs, doubling their size. "Hah... I can see why Rouge does this so much," she mutters, jostling her boobs. "Couldn't close this jacket anymore, if I wanted to."

"...Y-you put them in your boobs?"

"Sure did," she answered, able to guess how much you're blushing at that confirmation. "It's as good a place as any for me to hold them until a more suitable prison can be picked... And, they get to make a princess's body all the more delightful. Seems only fair, doesn't it?"
"Y-yeah..." You shifted a bit, suddenly feeling the movement of her glutes—guess she started running, now. "H-hey, is it fine if I move around inside you?"

"You want to do that? ...Sure if you can. Feel free to treat me as a Zone, I guess. Just be careful if you go too high up, okay?"

"I-I will." As you cast an illumination spell to light up Sally's intestines, you couldn't help but think about her choice of words... Treat her body like a Zone, like the ones that the Sonic games set their levels in? Wonder if that meant she was as high-octane inside as one... Or if she sometimes gulps down Sonic and the like to give them a good ride. Suppose those are questions to ask, or to see the answers for yourself, as you decided where to go inside the Princess of the Kingdom of Acorn.