n.; An erection aroused by violence
Clubbing baby seals gives me such a murder boner!
af D. Pratt 15. november 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.
af Danny Valentine 11. december 2010