Rogue

If Rogue was a person I'd imagine her to be Kate Nash. She is lovely to have around and then all of a sudden she gets snappy. 

(Kate Nash - Foundations)

You said I must eat so many lemons
'cause I am so bitter.
I said
"I'd rather be with your friends mate 'cause they are much fitter."

Yes, it was childish and you got aggressive,
and I must admit that I was a bit scared,
but it gives me thrills to wind you up.