This is it!
"With food!" You answer, almost falling over as you jump in excitement. Risa stretched and yawned again. She got off the couch and picked you up, bringing you to the kitchen and setting you on the counter. She pulled out some hotdogs and buns, along with ketchup and lettuce. She placed some lettuce on the buns before the hotdog, then poured some light ketchup on.
"On the food?" She asked.
You didn't get a chance to answer. Risa bit into the hotdog. You were able to hear the lettuce crunch between her teeth. She pretended to make a satisfying hum similar to a moan. She opened her mouth, showing all the masticated and chewed food int he back of her mouth before closing her lips and swallowing loudly. She traced the food as it traveled inside her until her fingers passed the counter.
You've decided that going in with the food increases your chances of getting crushed and trashed by the teeth. You shook your head, "I'll go when you're finished."
Risa looked at you with a smile before biting into the hotdog. She chewed slowly and teasingly, lowering her throat next to yours. You placed your hands on her neck and felt the food travel as Risa swallowed hard. She did a cute little burp and took a few more bites. For the final piece, she handed it to you. It was the size of a safe, but you managed. "Hold it up." Risa suggested.
You held it above your head. Risa dipped down and engulfed it and your upper half. You felt the warmth and smell of her breath. Her teeth were just on your ribs. You felt your legs lifted off the counter. You were hoping she'd slurp you in and gulp you right now. That time will come. For now, she licked her tongue against your head and hooked the hotdog and spat you out. You land on your rump, covere in her spit. Above you was a few strands connecting you to her lips. They broke as she started chewing.
After a loud swallow, Risa looked down at you, and got closer, "Well, well, looks like you're next. Mmm.. Climb in."
The moment she opened her mouth, you jumped in. Her lips enclosed around your hips and she rubbed her tongue all over your upper body. You shiver in complete joy. You lied limp for a few moments, giving the muscle some time to poke around with you, before grabbing it and using it as leverage to pull the rest of you in.
Your body is now covered in lukewarm saliva and bits of food as you lay on the tongue. You grab it and hug it tightly, smothering your body against it. It was so warm and soft. Risa folded the tongue around you and began sucking the flavor off you. You blushed in joy. You've only day dreamed about this moment, and it was everything that you'd thought it'd be. You found yourself grinding your body against it until you were out of breath.
Risa's moan was heard before you started to slide towards the throat. It was dark, and looked like it was a tight squeeze. Risa gulped hard. You were right, it was a tight squeeze. It didn't hurt, however. It felt like a massage and every moment of it made you blush. You heard Risa purr as you pass her chest. Finally, you enter her stomach.
You were ecstatic. It's a dream come true! You were in your best friends belly! It was full of piles and crushed and chewed food particles churning and digesting. It was hot, but not to much to bear. It smelt like old meat and ketchup. You can hear a purr, followed by a moan and thuds as if her belly was being pat.
Then you realized you were waist deep in acids...