Kirby and Nidorina saw an ad for a new karaoke restaurant. And it happened to be all you can eat Tuesday. They were really on top of this one.
Kirby and Nidorina have a lot in common, jovial folk who love to sing (though not well), dance, and eat whatever happens to be in their line of sight! To them, they just live their life to the fullest, being joyful in everything that they do. And it's a nice time off from annoying friends/demanding family, too.