1. Short for: Bull Shit talk.

2. BS talk is when someone (usually drunk, or a liar, or BOTH) talks shit about someone else, some made up BS story, Beer talk, tough man talking, etc... When those people do this, it is always NEVER going to happen, could not happen, or never DID happen. It's a lie, or a dreamed up idea, a scheme, or an idea that would fly like lead balloon.
1. John sat there and did nothing but BS talk ALL NIGHT LONG! You'd think after he had 3 40s that he'da passed out!
by IrishDaddy2U April 14, 2010
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