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The act of removing one's tampon and throwing it at or near a victim.
"Dude, Jenny pulled out her tampon and threw a crimson grenade in the middle of her fight with Becky!"
by Sherlock Holmeslice July 29, 2015
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2
When a woman takes out her tampon and throws it to her victim.
I was just hit with a crimson grenade, I must go.
by supertavs July 28, 2015
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3
The act of taking out one's tampon and flinging it at one person or a crowd of people with the intention of:
1) transferring any blood-borne diseases the thrower currently has

2)disgusting those in the blast radius of the grenade to the point that they vacate the landing site.
When Emily realized the line at the grocery store was too long, she lobbed a crimson grenade toward the crowd; clearing out the rest of the customers and allowing her to advance to the front of the line.
by Metcalfone July 29, 2015
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4
The act of pulling out ones bloody tampon and throwing it at someone.
Lisa was such a bitch today in spanish class,i'm glad Karen tossed a crimson grenade at her.
by cswooll July 29, 2015
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6
The act of removing a tampon and throwing it at someone.
r: "When i was a sophomore these 2 girls got in a fight in my spanish class and it escalated to the point where the one girl realized her best option was to take out her tampon and throw it across the room. "

f: "Ah, the old Crimson Grenade trick."
by Brandon Dowell July 29, 2015
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7
The act of taking a bloody tampon and throwing it at another individual.
Cedric got hit with Crimson Grenade yesterday at the GWAR concert.
by rhaegaltargaryen July 28, 2015
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