In Taboo Code: Red (タブーコード・レッド), each player has a card placed in front of them that can be seen by all the other players. (Each card has two words or phrases on it on opposite ends of the card, and whichever end is up is what's important.) The word or phrase in front of you is your taboo code.
Everyone then starts talking, with you trying to lure the other players into saying what is taboo for them. If they say their taboo code, then they're out of the round.