I've always enjoyed the idea of a huge monster in a regular-sized space like a bedroom, so I figured Takato's bedroom was a good place for these three to get up to some shenanigans while he's away. How did these three in particular end up there? I don't know and I don't care! I should also admit that I haven't actually seen very many episodes of Digimon because it always came on at a time I wasn't available to watch, which is unfortunate because it seemed to be quite good!
I typically don't spend too much time mulling over why Digimon would have genitals when they're created from data, but it IS canon that they do have necessary biological functions including eating, digestion, and going to the bathroom! And that's all the reason I need. To those ends, I've always like to pair Veemon and Agumon together because I think they would click! Like, REALLY click. And would probably have a lot of things in common with each other, including things they like to do in private.
In such a case, their discovery on how to use their bits probably was probably a joint effort through trial and error, I'd think! Not knowing the other functions of their dangly parts, they'd rub themselves in front of each other, talking about how good it makes them feel, how good rubbing them against each others' makes them feel, and it only gets better when those parts grow and jut out in front of them all stiff and wobbly! ESPECIALLY when they digivolve and assume their larger forms with malehoods to match. Greymon and ExVeemon, pressing the tips of their dicks together and grinding their plump pink domes into the other's, wrap their foreskins around each others' cockheads, press their penises parallel to each other and start stroking... all of that before they even try any actual humping. Their bodies just seem to know what to do! And boy, does it pay off after they've been at it for a while, washing them over with a feeling so good their bodies just burst with white cream splattering all over their hides. It's gross, but nothing some licking can't clean up! It's just easier-- especially when you're a 15-foot tall hulking monster that spurts so much of that white cream at once it'd take hours of scrubbing and rolls of paper towels to make it all disappear.
Of course, by the time Guilmon joins the party, he has a lot of catching up to do! More naive and curious (and less mannered) than Agumon and Veemon, he's prone to the same kind of discoveries as the other two rookies, but without other digimon to teach him proper cock etiquette, he approaches it more like a wild animal wandering his way into civilized life. Smells that get him excited will give him an erection he has no shame in flaunting around, and anything he finds that would feel good against his sensitive regions, he will curl himself around and hump his drippy dino dong against it, giggling and murmuring over how good it makes him feel. An awkward situation for sure, one you might shout at a dog for doing when you catch him. But Guilmon? Kind of a different story! Fella just needs some education!
And who better to teach Guilmon about the Birdramons and the FanBeemons than Veemon and Agumon? Or some variant of it, anyway.
"We know you like to play, Guilmon, and playing around is certainly fun!" says Agumon instructively as he pats Guilmon on the side of one of his raptorial thighs, causing the fleshy hanging appendages in between them to wiggle. "But when playtime involves your penis, the rules are much different!"
"Yeah! When you wanna play with your cock, either do it somewhere no one will see you, or with people you know want to play with it too!" says Veemon, reaching in between Guilmon's legs to hoist the feral Digimon's flaccid member in his palm and giving it a squeeze. Immediately, Veemon can feel the bulbous mass throb in his grip and begin to expand.
"My... cock?" asks Guilmon, leaning toward Veemon inquisitively and touching a claw to his chin as his member continues to expand down Veemon's arm.
"Oh yeah, there's all sorts of things you can call your penis!" Veemon responds while rolling the skin over Guilmon's shaft in his digits, eagerly awaiting the moment it's fattened enough that his idle motions would cause the furled foreskin at the end to open up and give him a look at Guilmon's glans hidden beneath. "Cock, dick, prick, pecker, peen, among others!"
"Can I call it Floppymon?" asks Guilmon.
"I'd just stick to the classics," Veemon responds.
"Your testes have a lot of fun names too!" says Agumon, peering forward in between Guilmon's legs from the rear. He reaches a claw up and cradles Guilmon's scrotum, letting the two orbs and the tender skin they're enveloped in drape across his paw. "Balls, nuts, berries, jewels, nads, the list goes on!" he says, softly rolling the two nuts together in their pouch.
"Heeheehee! Those are funny!" says Guilmon with a laugh, hoisting his rump upward to give Agumon more room to play with his sac.
"There's all kinds of funny words for everything down here! Even the tip has its own nicknames!" says Veemon, peeling the skin back on Guilmon's fully-erect maleness and marveling at the red digimon's plump, pink, sticky cockhead, and the way it swells and flares slightly when brushed by Veemon's breath. "Some guys call it their dome, or helmet, or knob, or even mushroom!"
"Yeah! Even your butt has a lot of names!" says Agumon, planting a paw at the underside of Guilmon's tailbase and pushing it upward, putting him eye-to-"eye" with Guilmon's soft, supple asshole. "Like tailpipe, sphincter, shitter, and my personal favorite..." Agumon illustrates his point by pressing his nose firmly up against Guilmon's damp pucker and takes in a long, savory breath of its spicy musk. "Mmmmm, stinkhole..."
"Oooohhhh myyyyy," Guilmon coos, his spine curling upward and sending shivers throughout his body, quite familiar with sniffing that region as a means of getting to know one another. Sweat beads around Guilmon's brow the more his privates are caressed and nuzzled by the two smaller Digimon. "And I can play with Veemon and Agumon? Like cock play and butt sniffs?"
"You bet!" Veemon says, giving Guilmon a thumbs up with the hand not currently being doused in warm dino pre-cum. "If you ever want something soft and warm to rub your dick on, just come to us! We'll take give it everything it needs and have a lot of fun doing it!'
"We've been playing those sorts of games for a long time. We can show you all of them!" says Agumon while poking the end of his snout in various spots all around Guilmon's taint to indulge himself in the big red digimon's under-tail odor.
"Yaaaay! New games! I'm gonna be the best!" cheers Guilmon, bouncing up and down in place happily and nearly knocking over Veemon and Agumon in the process.
"Well first, you're gonna have to learn how to play them!" says Veemon, taking a step back and gripping his own stiff cock to hold it up against his white belly proudly. Guilmon leans down to get a closer look at Veemon's penis and giggles, after having seen how his own twice-as-long member looked in the same hand.
"Heeheehee, Veemon's pecker is so tiny, hahaha!" says Guilmon, smiling down at it as if it was a cute woodland animal.
"Now you're getting the hang of nicknames!" says Agumon proudly, suppressing a giggle of his own.
"H-hey! It's the appropriate size for someone of my height! It'd look silly if it was any bigger!" says Veemon with a defensive huff, a red flush adding to the colors of his blue, white, and yellow cheeks.
"Hey Veemon! If you want to teach Guilmon how we play, I have an idea on how to give him a MUCH better demonstration!" says Agumon, gesturing by spreading his claws apart.
Veemon perks up, immediately catching on while Guilmon's head turns back and forth between the two of them curiously.
"This is why I love ya, Agumon!"