to insert your penis into a vagina or to put it back into your pants
I couldn't rightly sheathe the sword after I'd been handcuffed so the policeman gladly obliged.
by Schismrobo January 18, 2008
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"Damn Bruh sheath your sword."
"I'm not sheathin my sword till 3am tonight baby."
by RawrXD123 March 3, 2017
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The act of a male placing his genitalia into another male's urethra.

Requires a urethral gape, lots of lube, and pain tolerance.
I fucked brad until he came, then I sheathed my sword into his flaccid dick. He said, "don't sheath your sword into me", but I did it anyways.
by Living Ass January 31, 2019
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A risky sex act. A man puts on a condom and covers it in lighter fluid. He then lights it and puts his penis into a vagina.
I’m going to be sheathing the flaming sword with my girl tonight.
by tankajahari December 1, 2022
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