you say it s your birthday it s my birthday too yeah they say it s your birthday we re gonna have a good time i m glad it s your birthday happy birthday to you yes we re going to a party party yes we re going to a party party yes we re going to a party party i would like you to dance take a cha cha cha chance i would like you to dance dance i would like you to dance take a cha cha cha chance i would like you to dance dance you say it s your birthday well it s my birthday too yeah you say it s your birthday we re gonna have a good time i m glad it s your birthday happy birthday to you