I couldn't be happier.

我快乐得不得了（不可能更快乐了）

why don't you tell mommy on me. 

tell mommy on me 向妈妈揭发我 

I refuse to get sucked into this like, weird little Geller dimension thing OK. 

get sucked into 被卷入…… 

you teased me and you always, always got your way.

get your way 得逞

You're just gonna have to stop pissing me off.

Piss somebody off 惹某人生气

That song has so many levels. 这首歌好有深意啊！ 

It may not be a bed of roses.

bed of roses 称心如意的境遇