This story happened in Universe 13.

Raditz, who recently arrived on Earth, looking for his brother, Kakarrot, is currently yamchaing Yamcha.

Suddenly, Tenshinhan's cry is heard: 'KIKOHO!'

The tall Saiyan is buried in a rectangle shaped crater.

Tenshinhan keeps firing kikohos. 'Tien, no, this will deplete your life force reserves,' Yamcha cries.

Finally, Tien falls on the ground, exhausted. Raditz comes out of the crater, having only cosmetic damage.

'Okay, seriously, how often does firing a super amplified blast against a vastly superior foe work in Dragon Ball?' he asks sternly.

'Err... never,' Tenshinhan answers.

'Then why did you even bother?' Raditz sighs.

'Because shut up!' Tien answers.

Meanwhile, in a Yugioh universe...

Ishizu and Kaiba are playing their duel on the latter's airship when the Egyptian woman suddenly pauses and says (in her Little Kuriboh voice): 'I have a feeling someone is stealing my catchphrase.'

Raditz is pressing Tien's head with his foot, trying to snap it.

'Yamcha, run,' Ten cries, his voice distorted of pain.

'No, I can't leave you here alone,' Yamcha says determinedly.

'You'll get killed too. Save yourself,' Tien insists.

Yamcha abruptly takes a totally casual expression, shrugs and says really fast: 'Oh, okay, if you say so.'

'NO, WAIT!' Tenshinhan snaps. 'Don't leave me. I was just trying to play cool and heroic. Come ba...'

Too late. Yamcha ran away. The next moment, Raditz finally manages to snap the triclopses neck.

Yamcha is hidden behind a rock and panting. 'At last, I escaped,' he whispers.

'Yummy, human flesh,' he hears a known, psychotic voice and feels Kakarrot's teeth on his arm.

'YIKES!' he pulls back his arm. 'I knew you're a freak, but this is too much!'

'Hey, at least I don't pretend to be a vegan, like Alyse Brautigam,' the Saiyan protests.

'Ahh, Alyse,' Yamcha sighs with nostalgia. 'Good jack off material!'

Some random silence. 'Err, where were we?' Yamcha asks.

'I was about to kill you,' Kakarrot says, equally casually.

'Hah, you wish,' the bandit snaps and the two warriors initiate combat.

'See? See how strong my wolf fang fist makes me?' Yamcha cries, panting, and slightly moves his head towards the wolf illusion next to him, thus beckoning to Kakarrot to look over there. (All the while, Yamcha is rapidly moving his arms with Kakarrot blocking, in a fashion that makes the fight look like the same moves are repeated over and over, like in Disney short cartoons from 30s and 40s.)

'Is this supposed to be a wolf?' Kakarrot asks (still the fight looking the way I described before). 'It looks more like Sylvester from Looney Tunes.'

'Darn you, Salagir,' Yamcha curses. 'When will he learn to choose more carefully the people who draw his specials? I mean, seriously, one would swear he had learnt his lesson after Bojack special.'

That moment, Kakarrot kills him with a blast. However, when he's about to eat him up, the bandit's body is annihilated by a newcomer's blast.

'At last, I found you, Kakarrot,' Raditz declares.

'You ruined my food,' U13 Goku goes back to his psychotic expression and attacks.

Surprisingly, he manages to knock Raditz away with a wrestling move and continue the combo with a mouth blast.

'How did you become so strong?' Raditz asks, annoyed.

Kakarrot answers: 'Maybe because I was lucky enough NOT to hit my head, thus NOT wasting my childhood being trained by weirdos who would make me carry milk boxes and chase cats, calling that martial arts training.'

No sooner has he finished those words than Raditz knocks him unconscious with a punch in the guts.

Next, he shoves him in a spaceship and the two Saiyans abandon the planet.