The remnant 'juice' left behind from a woman who's been on their period. Seen most often in a restroom on a toilet. Repulsive to most.
"Kaitlin! Get your period juice off the toilet!"

Dov's favorite drink is period juice.
by Kyle Bryan November 14, 2007
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The red bloody mess that gushes from a woman's vagina during her period.
Oh shit I just got period juice all over your dog!
by anonymous December 3, 2004
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oh man that chick left period juice all over the inside of her pantys
by greyden January 21, 2004
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What females produce during their period, normally have to remove the substance into a pad or tampon.
-Boy, “Eew, WHAT THE FUCK IS THAT ANDREA?!!”

-Andrea, “Oh, I’m just getting rid of my period juice!”
by A_Gamer-Boii December 29, 2018
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