verb (used with object), bull·shit·ted or bull·shit, bull·shit·ting.
verb (used without object), bull·shit·ted or bull·shit, bull·shit·ting.
Origin of bullshit
verb -shits, -shitting or -shitted
"eloquent and insincere rhetoric," 1915, American English slang; see bull (n.1) + shit (n.), probably because it smells. But bull in the sense of "trivial or false statements" (1914), which usually is associated with this, might be a continuation of Middle English bull "false talk, fraud" (see bull (n.3)).
by 1942, from bullshit (n.). Related: Bullshitted; bullshitting.