You still have your brown card if you are an anal sex virgin.
To take someones brown card you are the first person to have anal sex with them. See v card.
Last night I took that girls brown card.
When a male joins the gay community or behaves in a homosexual-like manor that suggests that he should.
Nick: "Where is George? He isn't usually late to football practice."
Paul: "I heard he had nail appointment."
Nick: "I heard he needs a brown card."