English edit

Etymology edit

From bird +‎ crap.

Noun edit

birdcrap (uncountable)

  1. (slang, mildly vulgar) bird excrement
    Synonym: birdshit
  2. (slang, mildly vulgar) bullshit; something fallacious
    “It's just a bunch of birdcrap. What's it got to do with Mark Doukas getting whacked?” “I don't know,” I admitted. But deep down I had a feeling there might be a connection. (The Alpine Advocate: An Emma Lord Mystery, page 87, by Mary Daheim, 2010[1])