Top Definition
An alarm in your head that goes off when someone around you lies, compelling you to yell "BULLSHIT!" suddenly and loudly.
When Tina heard Dylan say he aced the Geometry exam, her bullshit alarm went off, and several teachers frowned disapprovingly when she yelled "bullshit!" in the hallway.
by Rose Reaper October 28, 2007
5 Words related to bullshit alarm

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