talk out of one's ass

Verb

talk out of one's ass (third-person singular simple present talks out of one's ass, present participle talking out of one's ass, simple past and past participle talked out of one's ass)

1. (Canada, US, idiomatic, vulgar) To exaggerate, lie, or speak nonsense, often in a way that involves shooting from the hip.
   • Near-synonyms: (general) bullshit (verb), talk out one's ass, talk through one's ass, talk out of one's ear (expurgated), talk through one's hat (expurgated), shoot one's mouth off, shoot from the hip, whistle in the dark; (in lieu of occupational competence) fake it till one makes it
   • "We looked it up," Colbert said. "And the Department of Environmental does not exist, meaning Trump is either talking out of his ass or he's already eliminated it."2016 April 7, Brendan Gauthier, “‘Talking out of his ass’: Stephen Colbert loses patience with Donald Trump’s ignorance”, in salon.com, retrieved 06 Dec 2017

   Synonyms:

   bullshit, talk out one's ass, talk through one's ass, talk out of one's ear, talk through one's hat, shoot one's mouth off, shoot from the hip, whistle in the dark, fake it till one makes it