In this game you have to admit a secret (obviously a pretend funny one) to the other poster. Think like those games when you fill in the blanks with certain things based on stuff like what colour your underwear is and whatever, except just making up an admitting thing. Eg:
poster 2: I admit I've always loved your pet dog!
poster 3: I admit I own this huge potato that I hid in your drawer!
alright, begin!