Waving your hands in a "V" formation through the air, is internationally accepted a gesture meaning "Have a nice day." It is suggested that you wish well to your superiors in this fashion.
Making a V with your pointer and middle fingers while putting the rest of your fingers down is a symbol of peace, and means the person making the gesture is a filthy hippie and should be kicked.
Also, V is sometimes for Vendetta.
Vism is crap!