Our opponents used it… and we also used it…not a single word said but the message is just as loud and clear as spoken words.
Crossing fingersMessage: I am offering you a draw but don't want anyone to heard it...malu woo.
Repeating movesMessage: Let's draw... (but sometimes we can used this to know whether our opponent is looking for a draw or if we want to gain precious time on our clock)
Taking the captured queen and place it nearer.Message: I am about to promote a pawn to queen and will win this game.
Signing the scoresheet during the game (normally accompanied with bored face)Message: Don’t waste my time. Resignlah…
There are others of course…like rapid firing moves in the opening stage (Message: Be very afraid, I know this opening well…) or scratching one’s head (Message: Damn it, I make a mistake…but be carefully, sometimes that is what your opponent want you to think but the truth is he has set some trap there…)