1:bull crap, but made apropriate for mixed company
2:something that is not important, idle chit chat, i.e, shooting the bull

Use this when you want to call B.S. on something someone says ( useful in a work environment ). It's a combination of "bull shit" and the phrase "horse hockey" ( which also means "nonsense" ).

Another word for bullshit. Basically its a one word reply and then you add the rest of the stuff after it.