Bulma and the other ladies, after listening to the full story, erupted with tearful laughter. "Goku, there's nothing to worry about. Babies don't get delivered by birds. They grow inside their mother's until they are big and strong enough to make it on their own."
Goku, blinked, still confused. "Huh? I don't understand?"
"Goku, our baby is right here." Chichi rubbed her small yet slightly larger belly. "Several months from now, the baby will come out. But right now, they aren't ready. We have to be patient."
Goku, still remained confused on the matter. "Well, if you say so Chichi."
Bosa giggled, patting Goku on the shoulder. "Puncle Goku is silly. Babies come from mommies, not from birdies."
Goku picked Bosa up, chuckling as if nothing was wrong in the first place. Seriously nothing could ever keep him down. "Hey, come on. let's get you walking." He said jovially, walking right into the gravity zone.
"GOKU!"
"Huh? What's wrong?"
Bulma was about to flip the switch when she noticed that Bosa wasn't in any pain. "Wait, Bosa, are you alright? You're okay right?"
"Yep, it feels funny but it's not bad! Puncle Goku's been teaching me ki control after all!" Bosa said with a puff.
This little stunt got the three uncles to come to their senses and look at Bosa. Bosa was just there, laughing, and yet the three of them were struggling to manage.
"Heh, it seems Bosa is a prodigy. Come on Krillin, we can't let him show us up too much."
"You're right Tien. Seriously though, Bosa can stay in this kind of gravity just like that… What is he made out of?"
"Whatever it is, he's going to be a fun nephew to have."
Goku crouched down and set Bosa on his feet. "Alright Bosa, just one foot in front of the other. It will be harder this time. But I know you can do it!"
"Ah! Okay papuncle." Bosa said with a strained smile.
Bosa started, and under the force of double gravity, he took a step forward. He was already sweating, but then he took another step. He continued until he couldn't any more, completely exhausted. Goku picked him up and brought him back out of the enhanced gravity field.
"That was a great job Bosa, you did very well, I'm impressed. You made 5 whole steps in double gravity. I think you'll find it hard to find someone else so strong at your age."
"Goku, you've been training him in ki control already? When did you even have the time for it?"
"Oh, that's an easy one, he learns a little more every day. He's really a smart boy, Bulma. Much smarter than I was. He might surpass all of us one day, and I want to train him to have the strength to help his friends. I was thinking of asking Master Roshi to help out, but it seems like that isn't going to work out."
Bulma picked Bosa up, cradling him in her arms. Bosa fell asleep, mimicking the very same drinking motion he made when Bulma could still breastfeed him. "He really is exhausted. Alright, you four. I'm putting this thing up to 5 times gravity. You can have as much fun with that as you like. I'm going to take a nap with my precious son."
"Oh, before all of you leave. Launch, is it true that you're pregnant too?"
Launch, not liking this, rushed to the panel and set the gravity to 5 times. Bulma hadn't set it yet. And since she hadn't the gravity went from 2 to 5 in a single second. The ladies left, Launch with a bright red blush above her cheeks.
"Woah, now this might be a bit too much for us right now."
"Don't be a quitter like that, Krillin. I'm certainly not."
"Is that because you're gonna be a daddy, Tien?"
Tien started sparring with Goku. Krillin and Chiaotzu watched as they meditated, to acclimate themselves to the new pressure.
Goku chuckled, blocking a punch. "Heh heh, Tien, this is fun. We should do this more often."
Tien smirked, blocking one of Goku's high kicks. "Yeah Goku, under these conditions, I might finally catch up to you."
Goku continued laughing. "If nothing else, I bet you'll soon be stronger than Piccolo sooner or later if we keep this up."
Tien smirked again. "If that reaction earlier was anything to go on. And I will be a father, I can't just let myself remain weaker than the strongest enemy in the world." He let out a small chuckle. "And I'm certainly not going to be like Yamcha. I'm going to be around."
Goku and Tien sighed, and then their spar began once again. This time Krillin joined in a few moments later. And a few moments after that Chiaotzu joined in as well. The four friends continued sparring, each with their own motivations. Though there was a shared sense among them, getting Yamcha to turn around and actually come around.
Several hours later, on a nice soft bed. Bulma, Chichi and Bosa were laying down, napping. Mrs. Briefs and Launch we're trying on clothes and talking about girl stuff.
It was around the same time the three sleepers woke up from their nap, that Goku and the others finished their training, and arrived in the same party room from before. Goku, Tien, and Krillin, all shirtless and covered in sweat.
"Bulma, that was the best training I've had."
"Wait, are you serious Goku? You trained with Kami, and you're saying that was better?"
"Yes, I am. Though, there are a few special rooms up there on the lookout that have special properties. Though I never used them. Kami said I wasn't ready for them yet."
Bulma, stretching as she got up from her nap. "I see, I guess you don't mind answering a few more questions about it then. Like, is there anything you'd like to add to the room? Anything you need for it?"
The fighters looked at each other and pondered this question. Then Tien spoke up. "There is one thing that comes to mind… Though I doubt it's something we can acquire with ease. But, a stock of senzu beans would be quite a handy thing to have. And ever since Yajirobe moved in with Korrin, there seems to be enough."
Bulma put a hand to her chin, thinking about it. "Well, I don't really have a solution for that one. So for now just limit the training so you won't need them, I guess."