A Nick C is a scrawny, pale-as-a-vampire nerd who spends all of his time playing minecraft (Hypixel Bedwars to be exact) while calling other people "ez" and "bad" when in reality, he is retarded and mentally challenged.
Ez kid: Nick C is so mentally challenged, he actually thinks he is good at this! I was afk for fucks sake!
Nick C: EZEZEZEZEZEZEZEZ
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.