"Truth, Justice and What?" is the thirty-sixth episode of Season 2 of Teen Titans Go! and the eighty-eighth episode overall. It first aired on 26 March 2015 on Cartoon Network.
Pizza is the source of the Titans' goofy humor.
After a hard day of fighting crime complete with no singing, dancing, or to make him look foolish, Robin rewards the Teen Titans, but the other Titans cannot understand him. Robin finally asks them that he could order a pizza, surprising them. They all ask him, that they would pick the toppings they want. Robin then pretends to shoot them, first Cyborg, then Starfire, Ann, and finally, Beast Boy, and Raven. Unfortunately, Robin couldn't afford the toppings, so he instead picked cheese.
Once Robin puts the cheese pizza on the computer, the other Titans try to pick a slice, but Robin hits their hands with his staff, then gives them a warning: Eating the pizza may cause goofy humor and goofy random humor, and to the fact that they can run around silly and everything. The Titans ignore his warning, and then eat the pizza. Of course, they start doing what Robin said. Once the Boy Wonder told them to stop, the goofiness couldn't resume until he eats a slice, going berserk as well. The Titans continue to order more pizza up until the next day.
Following the aftermath, Robin agrees that it was too late for pizza. Starfire notices if they would eat breakfast pizza, but Robin implies that it was both too early and too late. Robin, knowing that forming the Teen Titans was about truth and justice, becomes desperate, and enlists the Teenage Mutant Ninja Turtles to help. When he asks them what goes to truth and justice, one of the Turtles adds pizza into the name. To the fact that pizza is important to the Titans, Robin then begins a pizza ban (in which Beast Boy mistakes it as a "pizza bin" or a "pizza van") up until Raven Ann, and Starfire quote him "pizza ban", which means that there would be no more pizza up until further notice.
The next day, Robin finds Raven, Beast Boy, Starfire, Ann, and Cyborg, wearing masks and holding something green, who begin quitting the team and joining to the TMNT—only for the pizza. They drink toxic ooze, while Ann drinks ice juice, turning them into turtles, only creepy-looking ones, frightening Robin. Ann turns very pale blue making her unable to move. They walk off join the Turtles, but the use of the ooze causes them to faint.
Later in the hospital, Raven, Ann, Beast Boy, Starfire, and Cyborg have recovered, and Robin notices that something stronger is holding the Titans together. But, to the fact that pizza was the one that truly holds the Titans together after all, Robin lifts up the pizza ban, and orders some pizza for the Titans, who yet again vary on the topping they want. Robin, ordering plain cheese again, calls to order it, but none of the pizza stores have pizza anymore, so he suggests who got them all—the Teenage Mutant Ninja Turtles.
Finding their hideout in the sewers, Robin knocks on the door, but a turtle asks them to have a password. Robin suggests they they would just let them in, but again the turtle only needed a password to enter. Robin uses a random password, Meeting up with the Titans, the TMNT suggests that they didn't left them pizza due to over-ordering, so they did the same way as they did. Nearby, Ann reunites with her sister, Elsie. As the alicorns share a hug, they hear the titans arguing. The Turtles had to eat sandwiches, to the reason that they aren't cool. Robin argues to them sandwiches are cool. Inconvenient to that, they start a fight; however, the Turtles fight back, defeating the Titans. However, Robin knows one thing: He and the other Titans run around silly and everything. Once he, Beast Boy, Raven, Ann, Starfire and Cyborg eat the pizza, they do goofy, crazy and silly things while defeating the Turtles once and for all. Robin exclaims that truth and justice mean nothing without pizza. When Starfire suggests what to do with the Turtles, Robin has an idea; he and the other Titans steal their shells. Robin, Raven, Starfire and Cyborg, wearing the Turtles' shells, and Beast Boy, as a rat, wearing Splinter's clothing, have fun with the pizza, shouting "Cowabunga!", finding it true that there is truth, justice, and pizza. That night, Ann and Elsie go for a sisterly flight.
For a full transcript of "Truth, Justice and What?", click here.