take the mickey
Definition from Wiktionary, the free dictionary
Alternative forms 
- (intransitive, UK, slang) To ridicule or mock.
- Are you takin' the mickey? You'll get yer 'ead bashed in.
- 2008, The Age newspaper, Who's laughing now?, by Kenneth Nguyen
- For the last eight years, taking the mickey out of George Bush has been great, victimless fun. Like taking candy from babies or shooting aquatically-challenged fish in size-challenged barrels.