1. Verb - to make someone feel sad by dissing their urban dictionarydefinitions anonymously, from a safe distance away with no come back.
2. Noun: a sad, loser, nerdy type who even his own Mum struggles to love.
Mum: You look a bit glum today, petal.
Geeky Kid: Yeah - I added 17 definitions to urban dicitionary dot com and some yorick went and thumb down every one.
Mum: Sometimes I just don't understand what you're saying.
Geeky Kid: (stressing, stomping out of room) See - even you got me as a thumb down!
by chris firth September 21, 2006
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A thumbs Down is a way of showing displeasure of something. It does not necessarily involve using your very own thumbs. But more of a virtual dislike.

It doesn't always involve similar things on different social networking sites or websites. On some websites it just means "I did not enjoy that" or "There's is a problem with it". But, on Urban Dictionary it means "Where is the penis?" or "Not sexual enough".
Whilst some perverted 50-year old is on this website, he is looking for a cheap thrill in what 'tea-bagging' means. So he types it in, but contrary to what he wants he sees:

Tea Bagging:
The act of putting a teabag in a mug (Requires placement and desire for tea).

You get a Thumbs Down from him.
No wonder
by diamondmanizzle3 August 5, 2013
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let's see how many thumbs down i can get.
by thumbsdown(: April 5, 2009
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idiot: hey that definition of that word is so true and im jealous, i just cant define a word sooo good like that. im gonnna have to give him a thumb down just to be a little bitch about it.
by rilesworth July 26, 2006
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An action of ridicule. However, if there are enough thumbs down, they don't count.
Yea boi! I gots me some thumbs down!
by Weesy-J September 24, 2008
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What I'm going to break the record for, most thumbs downs in a definition!
So keep those thumbs downs coming.
by Leruho Kdfcoi November 19, 2006
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