It's a popular party game known for its dark and often offensive humor, and it is intended for mature audiences. It is played with a set of black cards containing fill-in-the-blank phrases and a set of white cards with various words or phrases. Players take turns being the "Card Czar," who reads a black card with a fill-in-the-blank statement, and the other players submit their funniest or most fitting white card to complete the sentence.