《走火入魔》

Hmm , recently a gal named Joey introduced me the song named 《走火入魔》from 阿信 & 丁当. The music for the song is really nice and can be categorized as soft R&B but after analyse the lyrics of the song for few times i still wondering why must 《走火入魔》used as the title. 《走火入魔》means something really bad for someone especially in the martial art world. I still wondering what it really means by the song , i think i need help from someone who is an expert to really analyse it for me . Haha , anyway , thankz to Joey for introduce me this nice song but with weird name .