This is also combined occasionally with Disgaea, thanks to the game actually letting you level up to 9999.
Even World of Warcraft has gotten in on the act by adding in an achevement called It's Over Nine Thousand! It's not widely known at this point since getting to 9000+ achievement points is easier said than done. However it is in there.
"I'M A WARRIOR! Not some... VARIETY OF FLOWER!" Explanation Dub Vegeta is a Fountain of Memes even by the standards of such a memetic series, "Over 9000" only the most popular. Here, he makes a comment about a certain pink shirt.
"THEN THE WHOLE UNIVERSE IS GOING TO DIE!"
"I AM THE PRINCE OF ALL SAIYANS!"
Servant woman, bring me a drying cloth!! Explanation While Vegeta is showering, he asks Bulma (servant woman) for a drying cloth
"SAD FOR YOOOOOOOUUUUUUU!!"Explanation Like "Over 9000", anytime Vegeta inexplicably draws out his vowels (to better match the lip flaps) is about five times more likely to become a meme.
"I'll send you to the next/another dimension!". Explanation The Bowdlerised dub was firmly in Never Say "Die" territory, and its abuse of this phrase and variants similarly led to a lot of jokes at its expense.
"Old Man Krillin is unbeatable." Explanation The fact that an elderly Krillin was able to land a hit on Goku during their friendly fight at the end of Dragonball GT (Goku was obviously not fighting at full power) has prompted a meme that Old Man Krillin is a Memetic Badass who could beat anyone with ease.
"This isn't over yet. It'll continue for a bit longer." Explanation Muten Roushi says this to the readers at the end of the 23rd Tenka'ichi Budokai in the manga. Which then went to run for six more years.
The "Yamcha pose". Explanation The pose Yamcha ends in after dying to a Saibaiman (note Saibaimen are nothing more than weak, personality-less mooks). It was basically Yamcha's Character Defining Moment (defining how weak he was), because Krillin went to kill three of these Saibaimen right after that, in a single attack. Used to mock anyone that is considered pathetically weak.
Yamcha's weakness in general is a meme, period. The man seems to be the Japanese equivalent of Charlie Brown or something. Krillin is given this treatment sometimes as well.
"HURRY UP GOKUUUUUU!" Explanation The line Krillin says after Piccolo is killed by Nappa. Because that was basically he (or anyone else) was all good for at this point: Stalling for time until Goku comes.
The Ginyu Force pose. If there's a team in a series, someone has drawn them in this pose.
To be more specific, Ginyu's pose has been mercilessly parodied. Explanation The pose consists of Ginyu sticking his rear out, bent over showing his head between his legs, caused attention like from Team Four Star.
NEXT TIME, ON DRAGON BALL Z! Explanation The melodramatic voiceover for the On The Next segment in the English dub gets lampooned a lot.
In the Portuguese dub, when the episode is ending, there's "Não percam o próximo episódio, porque nós TAMBÉM NÃO!" Explanation It means "Don't miss the next episode, because we won't!".
"I LOVE CORNBREEEEEEAAAAAAAAD!!!!"Explanation Cell's final words before dying to Gohan's Kamehameha. He's actually shouting "I am perfect!", but it ends up sounding like he's shouting about his love of cornbread instead.
"GT Logic." Explanation Phrase used to explain any of the major inconsistencies in characters' abilities and/or attributes in GT. While it's generally agreed that the first two series had their share of plot holes, GT is seen as having far more than either of them.
Whoa! Mondo cool!Explanation Krillin's reaction to Goku's healing process in the Saiyan medical machines on Namek.
Yes, that's right boys. Mondo cool.
ME EAT YOU UP. ME EAT YOU UP. ME EAT YOU UP! ME EAT YOU UP!!!Explanation What Fat Buu chants while dancing towards Dabura with intent of eating him. As silly as it sounds it's actually quite disturbing.
"Is that okay?" "As a matter of fact, it isn't!"
Get away from me, Kakarot! I'd rather lose my body than have anything to do with you! Explanation When Goku tries to convince Vegeta to fuse with him, but Vegeta refuses.