Help me get revenge on my boyfriend? 10 points (:?

K, so at a wedding my bf put an ice cube down my dress & it wouldn't come out & was very unpleasant. O.O so I swore revenge & I want to go above & beyond. I'lll be seeing him at a movie tomorrow night. what should I do? ;D btw he thinks I'm gonna put ice cubes down his pants so I can't do that now..