Sinner!
How do you prepare for a chess game?
I often sing a song to make my opponents mad. Then they often go for unsound sacrifices to take revenge and lose the game.
Whenever my opponent has a chance I repeatedly tell him/her to "do it for the vine!" Until he/she proceeds to do so
I find I score much better when I flog the bishop, clean the pipes, or choke the chicken before an important game. How about you?