thumbs down syndrome is a sickness were stupid people like to thumbs down anything and everything if they dont like what they see or read usually a response to internet videos or comments like on youtube that they dont like just to try and prove a point
bob damn bill im not feelin so good i think after readin that latest comment im coming down with thumbs down syndrome it makes me wanna go and lowrate everything that i disagree with maybe that will make me feel better about myself
by ODog N Cali M.C N T April 25, 2011
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A way to express some down under love.

The way you do it, is you point both of your thumbs down, then slowly point them out and shout "TWO DOWN UNDER....THUMBS UP!"

Only Ozzy's will (most likely) get this joke.
As we we're leaving Outback Australian steakhouse, i told the waitress "I give this place Two down under...Thumbs up."

The very American waitress gave me a look, for she did not understand down under humor.
by Xx_iNsPeCtOr-sCoObY_xX December 30, 2011
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The gesture you give to something unpleasing to the eyes.
PV2 Solis goes those titties two thumbs down.
by PV2 Solis May 29, 2006
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"Put your thumb down" is a phrase that is used when someone try's to throw up the horns (a gesture where you pull in you middle, ring and thumb into your palm. Often used by fans of the metal genre. )but leave the thumb extended.

Often said to newer metalheads or posers. (Keep in mind if you make the mistake as a new metalhead it does not make you a poser.)
Metalhead: "DruidLord is brutal"
New Metalhead: "Fuck yeah it is" *throws horns with thumb*
Metalhead: "Put your thumb down!"
New Metalhead: "shit sorry"
by Flameb0i March 28, 2022
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A common way of rating things. One either places his thumb up to indicate something is good, or okay, or places their thumb down to indicate the thing sucks.

www.urbandictionary.com converted to this system over the star rating system, I think it stinks.
the thumbs up thumbs down system sucks.
by Conor June 2, 2004
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A contributor or lurker who, out of envy, spite or misplaced rectitude, combs through another contributor's list of words in order to deliberately give each one a "Down" thumb without considering any potential usefulness such words might have.
-- "Santa Claus? I don't get it, Kurt, who is against Santa Claus?"

-- "Poor ol' Burt, it looks like you've been the victim of the dumb thumb down. Check out your other entries to see if you got flamed there, too."
by al-in-chgo August 23, 2011
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Usually done by bored people who think people care about how many negative thumbs they have on their posts.
random thumb downs on perfect definitions:

this is how they think you react:
"OMFG WHY THE NEGATIVE SCORE??? FFFFFFFFUUUUU!!!!!!111oneoneone
by lolwutz- January 21, 2010
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