To Nick Clegg, the act of promising something then not only breaking that promise but also going in the complete opposite direction.
Example 1:
Tina: I'm so disappointed, Ryan said he'd become a vegan with me and yesterday I saw him in a steakhouse.Joe: What a Nick Clegg.
Example 2:
Johnny: Alex has been Nick Clegging again, he said he was cutting rent and now he's tripled it. Pete: I hate that clegger.
by Nex Solo December 14, 2010
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A Nick Clegg is a character with political promises that seem reasoned and optimistic in an age of austerity and financial setbacks for a nation, but in the oppurtunity of gaining political power and the oppurtunity to enact them, do the complete opposite and compromise all that he stands for and worked towards when he actually gains political office
Nick Clegg: I promise to cut taxes for the poor, improve services for the disabled, and cut the tuition fees for undergraduates in universities.
...
Nick: Where do I sign david?

...

Nick Clegg: we are now increasing the VAT to 20%, decreasing the provisions in the Disability Living Allowance and increasing tuition fees threefold. I feel dead inside, for I am Nick Clegg.
by I Hat Enigg Ers April 8, 2011
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Current leader of the UK's 3rd largest political party (liberal democrats). Before the first televised debate between the 3 main party leaders, it was commonplace to mock him for the fact that the media paid attention to the other candidates. Since the debate, he has become more popular as a political figure.

A politician and all-round bad boy from sheffield. Although a leader of a party which is renowned for fence-sitting, he's really done some crazy shit in his time.
"Damn, some crazy mother just set my cacti on fire"
"Must have been Nick Clegg"

(2009)
"Who's that guy?"
"Dunno."

(2010)
"Who's that guy?"
"Leader of the lib dems"
"k"
by doc daneeka April 28, 2010
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Former leader of the liberal democrats and David Cameron's puppet
Nick Clegg resigned after his party got wiped out
by James299 June 9, 2016
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