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1. When a man is convinced he has fucked the living shit out of his partner, and he/she usually tells him he/she loves him shortly after. When a sex partner screams during sex as though they were being murdered.

2. After a man has sex with a woman on her period and his penis is covered in blood and resembles a murder weapon.
1. "Yo I hit her with the murder dick, now she won't leave me alone."
by Chester Steaknife September 02, 2012
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The act of (type of sex) fugging a choice biddie while she has been bleeding through her slit, just to find out that after completion, your dick looks like it has been skinned. Its bare... its raw... its red... murder dick.
Babe I know I am on my period, but i'm really horny... Are you down for some murder dick?
by Beefy Curtains September 25, 2014
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