Flirting is fun and life-affirming and a way to burn off sexual tension in a socially acceptable way. Teasing is great fun too, but it implies an intent to go further (like Erin said), which can get weird if folks are playing with different sets of expectations.
Tintinnabulation - first place (Free Spirit)
Comet Q - second place (Quick and Risqué Sex)
Amnesia - third place (Le Noir Erotique)