Sticking a piece of paper on your forehead is not a game.

There is a piece of paper on my forehead that I can't say. It's called "It's hard to open my heart". The rules of the game are as follows: everyone has a carefully prepared card on his forehead, which says what the pasted person can't do or say (and a trap card). Once the posted person does something on the paper, he will be caught and punished.