Blend of bullshit + bushido. Attested from 1996, and popularized by the bullshido.net website from 2002.
- (slang, derogatory) martial arts fraud, especially exaggerated or fraudulent claims regarding the biography, lineage, skills or experience of martial arts instructors
- We understand the spirit of Bushido better than anyone. Or was that Bullshido? (comp.sys.ibm.pc.games.flight-sim, 22 August 1996)