On the day where Rico was visiting a building called "Doofenshmirtz Evil Incorporated" with the jingle playing when he gets inside. He went out of the elevator, seeing a lot of cool inventions in the room, then spotted a teenage girl that has fair skin, dark blue eyes, hot pink lipstick, and dark chestnut brown chest-length hair. She wears a tight-fitting elbow-length black leather jacket, tight black leggings, black medieval high-heeled boots. The teenage girl close her flip phone, seeing the boy standing in front of her with curiosity in his eyes.

Vanessa: is there something you would like to ask me?

Rico: sorry. I was just looking around at these cool inventions. My name is Rico Nepolio. It's nice to meet you, ma'am. Did you made all of this.

Vanessa: my dad made all of this to take over the Tri-state Area. It's nice to meet you too, Rico. I'm Vanessa Doofenshmirtz.

Rico: nice name, Vanessa. Reminds me of someone else that's also have your name, but she's a security guard. You can tour me around to see a lot of more inventions your father made.

Vanessa nod as she walks with him to show him a lot of inventions her father made that failed to take over the Tri-state Area. She holds Rico's hand, looking down at him that's smiling at her, smiling back to him with genuine smile. They search around, finding an invention that Vanessa never saw as Rico would almost put his hand on the button until she stops him.

Vanessa: I never knew about this invention, but it's best not to press the button, Rico.

Rico: it looks pretty interesting, Vanessa. Can we try it out on you please?

Vanessa: well I can't say no since you're so cute and small. Sure, let's try it out.

Rico: thank you, Vanessa. You're the best for this. Now, stay still and I'll press the button.

He watches her going back a bit, standing in front of the invention as Rico press the button on her, seeing it shine a bright laser on her that was harmless. Vanessa looks at herself that nothing happened until she heard a hissing sound, seeing her belly swelling up, stretching her jacket with the buttons almost strained on it, and her butt and thighs expanding, stretching out her leggings and boots. Rico watches her body expand more bigger as her arms and legs puffs up like two logs, spreading out, and her breasts gets huge, revealing a lot of her cleavage. Vanessa blushes as she floats above him, realizing that the invention has inflate her into a big blimp.

Rico: cool! The invention really made you into a big blimp, Mommy Vanessa! How do you feel?

Vanessa: *muffled* really full and light like a balloon. I guess we should call it the "blimp-inator". I can't believe it really inflated me this huge.

Rico: I think you actually look beautiful as a blimp. It's really fitting for you~.

Vanessa: *muffled* aww, thank you, Rico. That's really sweet of you. How about you can hope and I can give you a fun ride through the Tri-state Area~.

Rico: that sounds really fun! Let's do it! After our tour, you can fly me back home. I'll tell you the directions~.

He hops onto her back, settling on her as they float out of the building to the Tri-state Area where everyone is having a fun parade with big parade balloons floating through the city. Rico relax on her large ballooned butt, rubbing her cheeks that made her moan softly. Vanessa giggles feeling his small hands rubbing her Inflated belly and rubbing her breasts, teasing her erect nipples while they float above like a big blimp, touring through the city until they float out of their to his home. Now back at home, Rico pulls her leggings down, exposing her large inflated butt cheeks as he gently puts his member between her folds, gently thrusting inside of her that made her gasp to feel him inside of her.

Vanessa: *muffled moans* oh! I didn't expect this kinda fun I'm experiencing, Rico~.

Rico: it feels so good doing this to you, Mommy Vanessa, hehe. I love doing this with you a lot~.

Vanessa: *muffled* I can see that. Hehehe. Please keep going for me please. I need this~.

Rico: *panting* I'll keep going for you, Mommy. Enjoy being my big blimp for me~.

He keeps thrusting more faster, rubbing her inflated clit to make her moan lustfully, feeling her getting more wet. Vanessa roll her eyes in the back of her head, flapping her inflated hands to feel him pumping her up that is really addicting and hope this never ends. Rico was getting close to his limit to releasing all of his love deep in her womb, feeling her inflated butt wobbling a lot in front of him that's mesmerizing.

Rico: looks like I'm close to letting it all out, Mommy Vanessa. I can't hold it much longer~.

Vanessa: *muffled* good, baby. I need you to fill me up with all of your love. Mommy needs a lot of love~.

Rico: *moans lustfully* I'm going to fill you up now... It's coming out~.

Vanessa: *muffled panting* good boy... you really satisfy this blimp very well~.

She moans more to feel his seed now filling deep in her inflated pussy, feeling him teasing her clit that made her squirt on him, panting from her climax. Rico slowly takes his member out, covered front their combined juice, walking around to cuddle between her inflated breasts, and give her a big kiss while playing with her boobs, squishing then gently. They moan softly in the kiss, tongue dancing together, slowly breaking the kiss with a satisfied smile.

Vanessa: *muffled* that felt so good, Rico... you're really amazing at this~.

Rico: I'm glad you had a lot of fun with me, Mommy Vanessa. I love you so much as my big blimp. The blimp-inator did a good job making you so big and cuddly~.

Vanessa: *muffled* thank you, baby. I love you too. I'm glad you love me as your big blimp. Let's have more fun~. *Wink*

Rico: *nods* sure, Mommy. We can have more fun~. *Wink back*

He gets out of her cleavage, getting behind her again to cuddle between her inflated butt cheeks, groping them gently while thrusting again with his member on round two. Vanessa moans more, twerking her inflated butt for him to grind more faster as she enjoys her day being a really big blimp for him. The blimp-inator was a successful invention that really made their day fun.