be on one's bullshit

be on one's bullshit (third-person singular simple present is on one's bullshit, present participle being on one's bullshit, simple past was on one's bullshit, past participle been on one's bullshit)

1. (originally African-American Vernacular, colloquial, derogatory) To behave in a characteristic, typically negative way.
   • 2005, K’wan, Hoodlum: A Novel, →ISBN, page 227:

     “Maybe we should’ve let him come?” Swan asked. / “Now you’re on your bullshit?” Tommy snapped.

   • 2019, Breana Morgen, When a Boss Has Your Heart 2, page 69:

     When I got in the house, Charity was on her bullshit, trying to question the fuck out of me, but a nigga wasn’t feeling that.

   • 2022, Dana Asby, Christine Mason, “Nick at school”, in Akeen Nassor Marsh, Lara Jo Cox, editors, Not Just Bad Kids: The Adversity and Disruptive Behavior Link, →ISBN, page 382:

     Ade was always mad chill. And he wasn’t really in the streets like that, so Nick figured he could probably handle AK being on his bullshit without bugging out on him.

   • 2023 January 18, Austin Bailey, “Bullying of trans Arkansans/obsession with childrens’ genitals continues at the Arkansas Capitol”, in Arkansas Times:

     On Tuesday, Rep. Mary Bentley (R-Perryville), whom we thought had moved on to worrying about children identifying as house pets, was back on her bullshit.

   • 2023 June 29, Angie Han, “Critic’s Notebook: ‘The Other Two’ Finds Its Way Back to Love in a Hilarious, Bittersweet Finale”, in The Hollywood Reporter:

     […] in a typically wry twist, a mid-credits scene of Brooke getting flooded with potential clients suggests the Dubeks will be back on their bullshit before long.

• Often with back, as in “be back on one’s bullshit”.