How can I tease a guy without making contact with him?

I'm going to a pool party this weekend and theres a certain someone I want to tease. My abusive ex boyfriend. I want to show him what a big mistake he made a year ago, attacking me and punching me in the face when he lost control of his temper, and show him what he's missing and will never get. What can I do to tease him without making contact with him? Would wearing a leopard print bikini help? I heard that guys like it when a girl crosses her legs, so apparently that's one thing.