《Happy Happy Birthday》的歌詞如下：
Happy happy birthday to you
生日快樂，生日快樂
Happy happy birthday to you
生日快樂，生日快樂
All you need is a good time
只要你需要的就是一個美好的時光
Happy birthday to you
生日快樂
第一小節：
Now let's sing a birthday song
讓我們來唱一首生日歌吧
To celebrate your special day
來慶祝你特殊的一天
The candles on the cake indicate
蛋糕上的蠟燭說明
How many good wishes you'll be receiving today
你今天會收到多少個美好的祝願
合唱：
Happy happy birthday to you
生日快樂，生日快樂
Happy happy birthday to you
生日快樂，生日快樂
All you need is a good time
只要你需要的就是一個美好的時光
Happy birthday to you
生日快樂
第二小節：
Let me take a moment to reflect back
讓我花點時間回顧一下
On all the memories we've made together
我們一起創造的回憶
From birthdays past to ones we've yet to celebrate
從過去的生日到我們還沒慶祝的生日
I hope you remember how much you're loved today
我希望你知道你今天被深愛著
合唱：
Happy happy birthday to you
生日快樂，生日快樂
Happy happy birthday to you
生日快樂，生日快樂
All you need is a good time
只要你需要的就是一個美好的時光
Happy birthday to you
生日快樂