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
Diamond-Manizzleによって 2013年08月05日(月)
What every "Urban word of the day" has more of than "thumbs up".
UD should pick words that have more thumb up than thumbs down.
derp de derp tum tattily tooによって 2012年06月22日(金)
Certain assholes on this site that give your definition that you made a thumbs down for no damn reason. For the people that do give thumbs down, my message for you all is:
Go fuck yourself. Really long and really hard...Until you die. :D
Some asshole on Urban dictionary just gave my definiton a thumbs down!

*Tracks down IP address of that person and shows up at their house the next day with a 50 caliber shot gun.*
TheAnimeFreak101によって 2010年09月25日(土)
A rating that asses give other peoples definitions for no fucking reason!
Definer: A lamp is an object that can light the dark.

Reader:*Gives thumbs down just cause hes a fucking ass*
Big LJによって 2006年09月01日(金)
The voting option on urbandictionary.com that people click without really thinking.
Ok, I have to say I have read so many hilarious things on this site, that even if they are politically incorrect, they are too damn funny to be given a thumbs down.
People with a sense of humour do not use this option as often as the more stuck up individuals.

Damn this site gives me jokes!
just some chickによって 2005年06月08日(水)
When Roman gladiators received the thumbs down signal, it meant that a he was to live. It signified that the guards were to put their swords into the ground.
Although I do not remember the name of the program, it was on the History Channel hosted by Peter Weller and he explained that thumbs down has been misinterpreted by Hollywood.
interested_meによって 2007年08月31日(金)
An action of ridicule. However, if there are enough thumbs down, they don't count.
Yea boi! I gots me some thumbs down!
Weesy-Jによって 2008年09月24日(水)

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