What the band's vocalist 'Matt Tuck' is speaking to, most simply put, is the concept of human beings being untrustworthy. That is the impression I get dealing with terminology such as “living with snakes” and references to a “venomous tongue”, not to mention more overt wording like “kill” and “betrayal”. And what it appears Matt is saying is that via such unfavorable characteristics, we tend to destroy our own interpersonal relationships. And “bring out the knives” would be a metaphor for what happens afterwards, i.e. us making a conscientious effort “to cut” the memories of said relationship out of our minds – so to speak, or something like that.
What the band's vocalist 'Matt Tuck' is speaking to, most simply put, is the concept of human beings being untrustworthy. That is the impression I get dealing with terminology such as “living with snakes” and references to a “venomous tongue”, not to mention more overt wording like “kill” and “betrayal”. And what it appears Matt is saying is that via such unfavorable characteristics, we tend to destroy our own interpersonal relationships. And “bring out the knives” would be a metaphor for what happens afterwards, i.e. us making a conscientious effort “to cut” the memories of said relationship out of our minds – so to speak, or something like that.