A hair do' so messy and unkept, it resembles the hair do' in a mass murderer's mugshot.
Dude, your hair is so wild, you look like you've been on a killing spree. You definitely have massacre hair!

That massacre hair is a good look for you.
by Mandee507 October 28, 2007
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Slang for a period, menstrual cycle, etc.
Makes a largely visual comparison between menstrual blood and that really cool scene from Kill Bill V1 (or any other other massacre, for that matter).

Also refers to the hormonal anger brought on by periods.
Guy/Girl 1 - Oh my god, Jess forgot her pad today, it leaked through the back of her dress...

Guy/Girl 2 - Bad?

Guy/Girl 1 - Yeah, panty massacre... <shudders>
by Ramone the Gimp April 2, 2007
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when one ejects a metric fuckton on into a toilet without aiming (or with the toilet cover down), and leaves behind what looks like a war zone of poop on and around the seat.
What the fuck Megan, didn't you lift the seat up?! It's a goddamn toilet massacre in there!!
by joejoejoejoeyyyyy September 15, 2008
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A Halloween party where a man named Sebastian pretends to dress up as a little kid in order to seduce a man dressed up as Jeffrey Epstein on his yacht.
“Yo are you going to the massacre party tonight”
“Nah bro I’m not trying to get booth fucked by Jeffrey Epstein
by Js452 October 18, 2021
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The act of eating lots of food after smoking marijuana. Often resulting in a mess of wrappers, leftover food, etc.
"When we got those pringles and oatmeal cream pies it was a munchie massacre!"
by Shanedawg Tha Realest May 8, 2012
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The act of ten dudes nutting on someone.
Guy: me and my friends did a montana massacre on jessica last night!
by Epicgamerboy69xxlel January 16, 2020
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