Two days after the start of the training camp, Karasuno was still trying to get in sync with each other and had just started another game against Fukurodani. After a couple of plays, Akaashi lifted the ball up for Bokuto to spike. Hinata went to block it but was a tempo behind and just followed the ball before thinking what he was doing. He ended up getting startled from ball's speed and, instinctively, lifted his right arm in front of his face while his left was still hanging in the air. The ball rebounded off his arm and hit Bokuto in the face. Karasuno celebrated the point asking how Hinata managed to do that kind of move.
"Uhhhh!! Hinata, that was awesome!" Screamed Nishinoya-senpai jumping around Hinata "How did you do it? That was... that was so... uhhh!! Grrr! Kaboshh and kabuum and in the end was like... was like fwooshh kapplushhh".
"R-really? Well.. ah ah ah It is a new move to block the spike I've been trying out I guess"
"Idiot that was just pure luck! That should have hit your face" said Kageyama feeling slightly jealous from the attention Hinata was getting from that lucky throw.
"It wasn't luck! I was trying a new technique!" said Hinata, feeling a bit smug about it.
"Oh really?? Then how did you do it? Cause what I saw there was just you trying to protect your face", Kageyama was ready to argument "your left arm didn't even move".
"No, I wasn't! I just thought that the arm is harder than the hand right? So I hit it with my arm instead to make a block-spike-fusion kind of thing! And... and the left arm was supposed to just do nothing".
"Well it kinda looked that you were smelling your armpits while trying to protect your face" said Bokuto joining the discussion.
"What did you say?? You wanna fight or what?" Tanaka-senpai snapped hearing someone dissing his teammates.
Nishinoya-senpai stepped in the middle, looked Bokuto in the eyes and explained "The only problem is that Hinata didn't do it fast enough. When he improves this new technique, it will be the most awesome block ever while checking if you're smelling bad or not!"
"Yesss! That way we know when we should just close our arms when passing by Kiyoko-senpai." completed Tanaka-senpai. "But then we have to do it fast so that it doesn't look like we're smelling our armpits, but actually doing something with style."
"That's why, while one arm is bent and you're facing your armpit, the other is straight to the other side to help distract people from seeing us smelling it", said Hinata trying to justify what he did with whatever his team members were saying.
Hinata, Tanaka-senpai and Nishinoya-senpai started getting fired up while trying to improve their new technique and started wondering what to call it. "It needs to have a cool manly name" said Tanaka-senpai.
"Well.... Doesn't it look like something familiar when Hinata does it?" said the captain joining the useless talk.
"Yeah yeah it looks like the "ya" character in hiragana" Bokuto joined, getting really excited about the new technique.
"When I saw Hinata and Nishinoya doing it, it looked like the "bu" character" said Akaashi-senpai.
Hinata and Nishinoya joined forces and both tried the new move together, but it didn't quite fit, so they were asked to do it again, but each one would face a different way, and then, it actually looked like the "bu" character.
"YABU!" Screamed Nishinoya and Tanaka at the same time, explaining afterwards that it could be the name of that strange new technique.
"Dabu? Why are you doing baby noises?" Ukai-san asked his team.
"Dabu!!!!! That is soooooooooooooooo cool" yelled Hinata. Hinata hurried Nishinoya-senpai to do it again, to see how it would look like.
"Dabu!" they both yelled at the same time.
They felt overjoyed for creating a new combo technique, while the others were feeling slightly embarrassed for them, but for some reason they wanted to do it as well.
"Then.... Is that a technique to smell your armpits or to block a spike?" asked Kenma coming from the other side of the court.
After a while, that technique ended up being known as the dab all over the world and people were doing it everywhere. But only a few people knew where it really came from.