What does BS stand for?

Biden Shot (political slang)

This definition appears very rarely and is found in the following Acronym Finder categories:

Slang/chat, popular culture

Other Resources:

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Berkhouse/Snyder (music duo) Berufsschule (German: vocational school) Best Speaker (Toastmasters) Beta Sigma (fraternity) BetalingsService (Danish: Payment Service) Béton de Sable (French: Sand Concrete) Betrayed Spouse Bi-Metallic Strip Bi-Synchronous Bible Study		Bien-Etre Sociale (Canadian French: welfare) Big Screen Big Shot Big Show (WWE wrestler) Big Sister Big Smile (Internet chat) Big Smoke (gaming character, GTA:SA) Bike Stunt Competition Bill of Sale Billing System

Samples in periodicals archive:

Palin called his position a "redistribution of wealth principle," but Biden shot back that fairness was the issue.

Palin says debate went well as polls favor Biden

Biden shot back that he has been battling for organized labor throughout his career, which he called far more important than "when you're running for president the last two years.

Clinton, Obama targets in lively Dem debate; Chicago event; ...