Everybody creates accounts everywhere that often end just to exist in different sites.
Forgetting passwords is also very common, my method is writting something related to something I saw before creating an account, like "ABirdOnTheRoof" "IFoundAUselessKey" wich is wonderful for it.
Sure, Goku always gets beaten up in the first encounter with somebody, then he goes to some place where there is no time.
At least that was the plot everytime I watched it.