Landing into a lake of warm, dirty water, you swim to the surface and scan your surroundings. Seeing a wall around you and recalling the taste in your mouth, you realized where landed, but before you could do anything, the mug was raised to Sarah's lips. Trying to swim against the current, it was quite the futile effort as you're swept away into Sarah's mouth and down her throat. Sarah drank her coffee and felt a human shaped lump going down her throat, much to her confusion.
"Dr. Windbere, do you still have Mark?" Sarah asks, Lani turning to her and thinking about it before it hits her.
"I remember having him in my hand before Patricia called me, so maybe he's on the floor or on the table?" Lani answers, getting down on her knees to look for you.
"You already lost him? That must be a new record!" Patricia jokes, Lani scowling at her.
"Dr. Connors, can you get me the endoscopic camera while I connect it to the network?" Dr. Fisher as she types away at her computer while the other two women stare at her in confusion.
"May I ask why, Sarah?" Patricia asks, getting a bad feeling from it.
"Call it a hunch." "Don't tell me..."
Patricia quickly gets the pill shaped camera and tossed it into Sarah's mouth, which catches it before swallowing it down. All three scientists stare at the flickering monitor before it displays Sarah's stomach and Sarah speaks to her belly.
"Mark, if you're in there, come to the camera I just swallowed. It should look like a yellow pill."
For a while, they wait, hoping it was nothing but their worries being empty, however your face appears on the screen.
"Thank god! I thought I'll be here without anyone knowing where I am!"
"Mark, I'm so sorry for this! I promise I'll get you out of there!" Lani apologies, before Sarah intervenes.
"Actually, can you stay there for a bit longer, until you enter my intestinal tract?"
This request confused everyone until Patricia grew the courage to ask the question.
"I may I ask why you would want that, Dr. Fisher?"
"Look at his clothes! While they're melting off, his body is still fine. No redness or any form of irritation on his body!" Sarah answers, which after a careful examination of your body showed she was correct.
"So I'm indestructible when it comes to acid. Well that's great and all, but still doesn't mean I would like to stay here. However, since I'm stuck here without any guarantee that you'll let me out, so I have no choice," you reply in annoyance.
"Glad to see you understand! Under a couple of hours, you'll be right outside of me, completely unharmed," Sarah said, disgust written on your face as the other two women rolled their eyes.

"Someone... Anyone... Shoot me in the cranium!" Sarah moaned as another fat, hot fart rumbles out of her bottom for about a minute.
During the last half a hour, Sarah has been ripping farts to the point that even Sarah couldn't stand them anymore, each one longer and smellier than the last.
"You already fumigated four rooms and now you're trying to make the bathroom even smellier than before?" Patricia muffledly complains through her gas mask as Lani observes the laptop on her lap.
"Mark has it worse as he's at the source of it! But does seem he's the cause of the increased flatulence Sarah is emitting and was able to reach the rectum very quickly. Maybe Mark like a natural laxative?," Lani comments, though Sarah groans in response.
"That's great information and all, but someone get me a gun so I can shoot myself!" Sarah moans in displeasure as she rubs her bloated stomach.
"He's at the other side of the anus! Dr. Fisher, we're about to get in position for extraction!" Lani announces, the scientists getting behind Sarah's ass as the latter drops her panties and pants.
"Damn! Check out the booty on this bitch! My ass cheeks are at least twice the size of basketballs, but hers must double of beach balls," Patricia said in awe as she grabs a handful of Sarah's cheek before a another fart blasts it's way, jiggling blonde's behind.
Peeling the cheeks apart after recovering from the surprise gas, Patricia could see your limp form sticking out of Sarah's anus. The trip through the giant's digestive system has not been kind to you as lost consciousness multiple times from the intestinal gas inside and slid across brown remains of her past meals.
"This must be a dream; no way I'm actually out," you mutter, looking out of the bum.
"This is reality. Now then, let's get you out of there," Lani said through her mask as her gloved hand touches you carefully.
However, a gurgle that shouldn't be made by humans was heard from Sarah's guts and everyone's sense of danger went off immediately.
"I feel like this is going to be a big one!" Sarah said, Lani trying to pull you out quickly, but the butthole held fast on your body until it opened for the monster inside of Sarah's bowels.
What came out wasn't a fart, but an explosion made from green gas roared from Sarah's rear and lasted for about five minutes, the smell so terrible it nearly knocked out everyone in the room. A tiny fart poofs out of Sarah's bottom before she gets up to pull up her lower clothing. Despite the pain she was in, she was turned on, especially when you were in her pucker as she farted, her crotch wet with excitement, but thankfully for Sarah, nobody saw or noticed it at all. After evacuating the room and washing you up, all of four of you were in a different room, partially recovered from the ordeal.
"Definitely not doing that again," you said, resting in Sarah's breasts as Lani stares at you apologetically.
"Seeing how Dr. Windbere failed in her caretaking duties and Dr. Connors an unsuitable candidate, I'll take over for now," Sarah said, though Patricia was scowling in disapproval at the idea.
"It's - it's late. We should head home for now. We'll discuss this later," Lani said, something everyone agreed on.
Leaving to their separate ways, Sarah heads to her car after cleaning up her work site, and drives home. Entering her home, she stares down at your sleeping form and thoughts run through her mind.