this phrase can be used as a boast or a warning. it refers to the act of using the restroom, leaving both a large amount of excriment and a terrible smell behind.
bro 1:hey bro, where's your bathroom?
bro 2: no bro, dont go in there. i just finished murdering the head.
bro 2: no bro, dont go in there. i just finished murdering the head.
by sailormanbananaton February 5, 2010
Murderous head is when you receive such serious head that your dick is bruised and hurts the next morning.
by prr what happened to that boi April 10, 2011