Truth, Justice and What?

"Truth, Justice, and What?" is the 36th episode of the second season of Teen Titans Go!, and the 88th overall episode of the series.

Summary
Pizza is the source of the Titans' goofy humor.

Plot
The episode begins at the Titans Tower, where the Titans arrive back home after another mission, and Robin congratulates them on not singing, dancing, or making him look foolish on the battlefield. As a reward, and after a lot of miss communication, the Titans start blurting out what type of toppings they want on their pizza reward. But, when Robin finally gets the Titans' attention, he tells them he couldn't afford any toppings. The delivery guy arrives, and after grabbing the pizza and kicking the deliver guy into the elevator, Robin throws the pizza onto the computer.

Of course the Titans start drooling all over the pizza. After a mess of acting crazy, Robin sighs and says that acting crazy was what pizza has done to the Titans. He says that when he formed the Titans, he was going for truth and justice. But when he was desperate, he turned to TMNT to help him. Mikey shows him that he needs to add pizza. After the other Titans try to tell Robin that pizza is important, Robin establishes a pizza ban. The ban causes the other Titans to quit the team and join the TMNT, just for their pizza. Robin tells them that they are not mutants or turtles. The other Titans drink toxic ooze and form into scary looking mutated turtles, while Robin watches in horror as the Titans fell on the ground, leaving Robin with no choice but to take them to hospital.

The Titans wake up eventually, still in bed but slowly recovering while Robin is standing there, saying that he hoped that something stronger than pizza was holding the Titans together. But since he sees that pizza is the only thing holding the Titans together, Robin calls to order a pizza. But, apparently, no pizza places had any pizza left. Robin tells the Titans that there was only one group who could have done this.

The Titans journey down into the sewers, full of disgusting waste, and walk towards the TMNT's hideout. First, they needed a password in order to enter. Robin spoke it out by randomness and it was correct. The Titans met up with TMNT as they admitted there weren't any pizza left for them since the Titans took it all so they did the same thing. TMNT weren't satisfied to eat only sandwiches as they claim those aren't cool but Robin tells them that they are good. Still inconvenient, both teams engaged in a fight for the pizza however the Titans were defeated temporary due to their goofy moves until Robin claims that they can run around silly and everything as he shoots out his grappling gun which it hooked down the mountain of pizza stacks making it falling over the Titans. As they ate a large amount of pizza, the Titans got out full of goofy energy enough to fight back against the TMNT which they won the battle eventually. Finally, Robin claims that truth and justice mean nothing without some pizza after a job well done. When Starfire was wondering what they should do with the knocked out TMNT, Robin has a plan by stealing their turtle shells, masks and skateboards to start rolling around the sewers in the same way as TMNT did, obviously with slices of pizza prepared by Beast Boy transformed into a rat resembling Splinter for their next adventure.

Characters

 * Robin
 * Cyborg
 * Starfire
 * Raven
 * Beast Boy
 * Teenage Mutant Ninja Turtles
 * Pizza Deliverer #2 (cameo)
 * Splinter (debut, cameo)

Trivia

 * This episode aired one year after "Missing".
 * This is the third crossover episode in the series. The other ones are "The Best Robin," and "Let's Get Serious".
 * The pizza box that Beast Boy shares with the Titans at the end reads "Pizza in a Half-Shell" which is a reference to "Heroes in a Half-Shell".

Continuity

 * Robin mentioning that the Titans didn't embarrass him on the mission for once, may be a reference to "Let's Get Serious" where the Titans were messing around.
 * This is the second appearance of the Teenage Mutant Ninja Turtles. However, this is their official debut aside from their cameo. ("Más y Menos")
 * This is the second time Cyborg has complained about someone else using a catchphrase similar to his, the last time it happened in "Uncle Jokes" when Starfire wanted to use "Boo Ha Ha" as her catchphrase.
 * This is the fourth time the hospital appears. ("Super Robin", "Second Christmas", "Pirates")
 * Robin talks about sandwiches being cool, possibly referencing his sandwich obsession from "Sandwich Thief."
 * This is the 2nd time in which other TV characters are shown. ("I See You")

Errors

 * Robin claimed to not have enough money for toppings, yet could afford to buy dozens of plain ones all at once. Though it's possible he was lying just to get out purchasing the toppings the other Titans wanted.
 * The Turtles were all about the same size, but when the Titans put their shells on, they changed size.
 * Despite Robin's assertion, Beast Boy is, strictly speaking, classified as a mutant (a human child whose genetic code was chemically altered).
 * Since the TMNT are Turtles, Beast Boy didn't have to drink toxic ooze to become one as he could simply shapeshift into a Turtle and since Beast Boy can transform into any animal, as long has he has seen it before he could theoretically transformed into a Mutant Turtle as he had met the TMNT (which are revealed to exist the same universe as Teen Titans Go! and are thus neither fictional or mythical).
 * Cyborg flings his butt out, but in "Gorilla" it was revealed he didn't have one as his rear end only contained cogs and an exhaust port, as well as in "Tower Power".
 * The mutagen that the Titan's used should not have mutated them into turtles. It said in most incarnations on Teenage Mutant Ninja Turtles that into any animal judging by the last non-human DNA you touched.

Running Gags

 * Robin kicking the pizza guy over.
 * Beast Boy mishearing the phrase "pizza ban", and getting excited over something else.
 * The Titans went crazy by eating a pizza.