Top Definition
A sword penis is a term used to identify a man's penis after he has enjoyed lancing a woman's vagina while she is on her period. Upon withdrawal of the penis, said penis is covered in blood, hence it appears like a sword after it has been removed from a deep, incisive, bloody wound.
Keelay.

Example Sentence: I left her limp and bloody. And all she could say in her ecstatic, wounded stupor was, "Thank you, Sword Penis. Like Jesus before me, you have Knighted me with my own blood."
by Sex Mafia December 12, 2011

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