n.; An erection aroused by violence
Clubbing baby seals gives me such a murder boner!
po D. Pratt Новембар 15, 2006
On a male, the physical effect of being aroused at the thought of extinguishing a human life.
An old lady crossed the street in front of my car and I got a murderboner at the thought of flooring it.
po Danny Valentine Децембар 11, 2010