From Cb Wiki

Bullshit (pronounced bool-shit) is a word which can be applied to several parts of CBC, its members and its history. It refers to the shit of a bull, for all you retards.

Unlike its close cousin (Shit), there is usually usually only one kind of Bullshit: a bad one.

[edit] Meanings

1. To be bad, eg. Shuckle is bullshit.

2. To lie, eg. You are bullshitting.

3. To point out a lie, eg. That is bullshit.

4. To step in, eg. Oh dear I have stepped in bullshit.