An exclamation usually used to expressed surprise or disgust. The combination of bull and fucking to shit further adds to the emphasis of the intended meaning of shit. Similar in nature to Jesus Fucking Christ, Motherfucking Shit, or Chicken-Shit Motherfucker.
Football game: The ref signals out-of-bounds when the qb actually scored a TD.

Tony: What?! Bull-Fucking Shit!
by The Teacher August 17, 2004
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absolute nonsence. Also used as an interjection to convey disgust and disbelief.
Joey sees a political ad on the TV. The politician says that he stands for "family values". He reaches for the remote and says "Bull Fucking Shit!"
by I Saw U2 Live Twice November 7, 2006
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when saying "that's some bullshit" just isn't intense enough for how you're feeling.

referring not only to shit from a bull, but the bulls ass as well.
"The Steelers won on the LAST fuckin play..thats some bull ass shit."
by bigbody bob December 22, 2009
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A reference to a general concept, which one hates, but does not want to directly mention.
"The only reason I'm wearing this bull ass shit is because I woke up five minutes before pchem and was like "shit, it's five minutes before pchem"

"I'm tired of this bull ass shit"
by bittercornellalum November 7, 2009
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Someone who wastes peoples time by generally taking verbal diarrhoea 99% of the time , they think they know everything but the more the bullshit the more you realise there full of crap
Bloody hell that Carlines at it again , non stop bullshit from moment I walked thru the door . Man he's such a bull shitting messer
by Thethruth13 October 23, 2023
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