What is the game when you pass the playing card from mouth to mouth?

The game you're referring to is commonly known as "Card Passing" or "Pass the Card." In this game, players pass a playing card from one mouth to another without using their hands. It's often played as a humorous party game and can involve various rules or challenges to make it more entertaining. The goal is to pass the card successfully without dropping it or using hands, which can lead to laughter and fun moments.