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A ferocious beastly animal who wanders the jungles and riverbanks in search of inferior animals to devour.
Dude that Mongoose ate my dog.
by Bob July 24, 2003
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Aug 11 Word of the Day
A phrase to describe someone who is cognitively degenerating. Synonym of "going off the deep end". Can have varying degrees of severity.

Reference to the song "Hey You" by Pink Floyd. The line "and the worms ate into his brain" makes no sense in an otherwise linear and literal narration throughout the lyrics.
"My boyfriend has a total case of brain worms. He told me the cat was bugged so the Feds could listen in on us having sex..."

or

"You totally stumbled over that entire sentence. Can't speak English all of a sudden? What, do you have brain worms?"
by _Jez_ October 03, 2009
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2
A high powered bitch, usually with a hyphenated last name. These women hate men and are snake killers.
Have you seen that new chick in legal? Yeah, her last name has a hyphen. That bitch is a power hungry mongoose.
by deathfordough July 03, 2015
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3
A person who flirts with as many people as possible, and then rejects those who inevitably fall in love. Stems from an unhealthy low self-esteem, as they want to feel loved by as many people as possible, regardless of whether or not they actually like said people. Originated from the idea that people don't know whether a mongoose eats a snake or a snake eats a mongoose.
1 - I think I've fallen in love with you...
2 - Oh... well, sorry, I don't feel the same.
1 - What? But you've given me all the signals!
2 - Oh yeah, haha, I tend to do that. ^^
1 - You're such a mongoose. :'(
2 - Excuse me?
by disastrophe March 28, 2009
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4
1) Someone who constantly acts like a clown and is slightly retarded.

2) A more politically correct alternative to mongole - a word related to the country of Mongolia

2) Also a small furry creature
1) Facey, give me back my watermelon you mongoose!

2) That mongoose is gonna get kicked outta school

3) Your mother's a mongoose!

by Adrian Glenn October 23, 2005
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5
Like the vehicle in Halo, a mongoose is that one bro who every girl knows is there but no one wants to ride.
"God, there are like no guys at this party"
'What about Mike?"
"Nah he's such a mongoose"
by claymor1515 November 28, 2011
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6
The name for a girl who is the village bicycle but a mongoose has pegs there for more than one person can take a ride at any given time making her even more of a slut
Zac and Austin rode a mongoose named Brittany whom has had up to 4 other people at one time
by You keyed my truck August 17, 2004
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