[be] full of (shit|crap)
1
(of a person) to be perceived as being dishonest or deceptive
The origin of the expression "full of shit" is unclear, but it is believed to have emerged as a colloquialism in the mid-20th century. The phrase is used informally to convey a sense of disbelief, skepticism, or disdain towards someone's statements or deeds. The phrase is often employed in casual conversations or informal settings to express frustration, disbelief, or to challenge the authenticity of someone's words or actions.
- I can't believe you're buying his story; he's always full of shit.
- I don't trust that guy; he's constantly full of shit and never follows through on his promises.
- Stop being so full of shit and tell me the truth for once!
- She said her dog ate her homework again; that's just being full of shit.
- You're claiming you won the lottery twice in a row?Come on, you're so full of shit.