What is the name of this song...(Hip hop song I think)?

It goes something like Cuz I'm a ............ nananananaaaaaa ......
or
If I were a ...............nanananananananaaaaaa
..................(something(this is a lot of song missing))
.....secret girl/hurl,huurl huurl

Sorry, I kinda left out a lot of bits from the song(cuz i don't know
them!)
Please help! Its one of my favourite songs and I need the name so that
I can listen to it on youtube!
best answer : 10 points! - guarenteed!
By the way this song is sung by a female.