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Word decribing how a girl behaves towards guys. It can be used as a verb or as a noun.

The female praying mantis bites the head off a male during sex to encourage ejaculation. If a girl is being a mantis, or doing a mantis, she's going quickly from male to male, getting what she wants.
Did you see Jess and Steve? He bought her dinner and a necklace and she dumped him. She totally did a mantis.

Krystle fucked three guys this weekend. What a mantis.
mantis by Annamonkey September 8, 2008
Related Words
A little very lasy creature who has sudden attacks of headache's
He how's the site coming along
FFS I'M A MANTIS
Mantis by Guess :) April 8, 2003
a generation of male television journalists that care less about answers and more about exposing personality in their reports. They were inspired into "journalism" by the person who asked President Clinton, "Boxers or briefs?" Comes from the phrase "Man Candy."
Carson Daly, Billy Bush and Ryan Seacrest are the Mandies who want their name to be part of their subject's answer.
mandies by Joe Corey May 14, 2004
Man Panties, like dude thongs or speedos. Underwear that looks like female panties but woren by guys
As my friend scatch his ass, he turned towards me to reveil he was wearing mannies just under his jeans.
Mannies by Leslie S January 16, 2009
Bro did you see his underwear?

No.
Well he was wearing solid gold Mandies and they were the ones I saw on eBay for 1.3 billion dollars.
GASP
HOE I KNOW

penny mantis 

A homosexual man who bites the head off of its prey after having long hours of hot, steamy sex. Also known to be on the prowl for it's prey after dusk.
the Penny Mantis has struck again!
penny mantis by Ron Jackson May 13, 2003