The Dragon Ball series is known for its over-the-top fights, magical attacks and otherworldly warriors, as the currently cosmic stakes of the franchise increase with each story arc. Even at its most mundane origins, however, the world of the Z Fighters was still far removed from reality.
This blissful ignorance of everyday laws is showcased in the very first episode of Dragon Ball, where Bulma commits several acts of violence against Goku. Though these are all naturally useless against the young Saiyan, Bulma's assaults show just how much larger than life Dragon Ball has always been.
Bulma Runs Over Goku
The first meeting between Goku and Bulma is most definitely not cordial, though it certainly prepared Bulma for the extravagant life she would live alongside the monkey-tailed boy and their friends. While Goku is heading home with a newly caught fish for dinner, Bulma accidentally hits him with her car, but the youngster isn't phased like a normal human would be.
Having lived a life of isolation in the forest, Goku had never seen a car before. Due to this innocent ignorance, he attacks Bulma's vehicle, thinking it's some sort of monster. Picking the car up with relative ease, he throws it into the distance, not even really noticing Bulma. The blue-haired teen comes back at Goku by firing gun shots at him, but this has an equally negligible effect on his alien physicality. It's only when Goku notices his attacker is, in fact, a normal human girl that he stands down.
How Bulma Breaks the Law
Dragon Ball's first encounter between Bulma and a Saiyan is incredibly comical, and as mentioned gives a good indication of how the rest of the series would go. Thankfully for Bulma, her crimes committed here are not judged as harshly by the law as they would be in the real world.
For one, hitting Goku with her car would be an immense issue, even if it was unintentional. Bulma would at least have to contact her insurance company, who would pay for whatever harm was done to the victim. She would also be legally obligated to stay behind and make sure Goku was okay, as doing otherwise is considered a hit-and-run incident. This would have landed Bulma in even more legal hot water.
Then there's the fact that she pulled out a firearm on a little boy and shot at him multiple times. While she might argue this was in self-defense, the one defending himself in this case would actually be Goku. After all, he was the one struck by Bulma's car, and his ignorance of what a car is only made his attacking the vehicle all the more justified.
Fortunately, the two became fast friends soon after this misunderstanding, with Goku's lack of knowledge concerning the law making this transition even easier. In the decades since, Goku has still failed to figure out the intricacies of normal human vehicles, though by the time of Dragon Ball Super, he's likely even more impervious to being run over now than he ever was.
