It sounds to me like it's a song about perhaps an ex boyfriend, or just someone that she's had a bad relationship with. The lion's roar may be a reference to this persons temper, and the way that she doesn't know what is going to be brought out from the rage. At the end it sounds like she leaves him/her, considering their attitude to be childish, hence the last line referring to the lions roar as a children's tale.
It sounds to me like it's a song about perhaps an ex boyfriend, or just someone that she's had a bad relationship with. The lion's roar may be a reference to this persons temper, and the way that she doesn't know what is going to be brought out from the rage. At the end it sounds like she leaves him/her, considering their attitude to be childish, hence the last line referring to the lions roar as a children's tale.