The fact that Hamtaro suddenly loses all the words he's gathered in Ham-Hams Unite when his dictionary gets ruined implies he had been constantly referring to the dictionary to navigate any conversations and never actually learned the words.
@LANthus I kind of got the impression from Unite! that it was some sort of recent new fad. Who knows how much time has passed since Unite! though since it's evidently been long enough for the map and clubhouse to completely change. Or maybe I'm reading into it too much. :p
@NovaSquirrel Hmm, well considering there's been distinct generations of hamtaro's it could be that... never mind we're overthinking a babygame.
@NovaSquirrel its one of the cuter lil things I love about the games. like Hamtaro, my son... you don't know how to speak your own language?!? the flipside/alternate take is that everyham just changes and makes up new words/dances so frequently that you HAVE to keep a list of all the changes