What is the most effective way to flirt with a guy?

I have guys flirt with me all the time and I never know how to flirt back??...What is the most effective way to flirt with a guy?
Being as I am a guy, I like when a girl is just nice. Smile, crack a joke, LAUGH at his jokes (not TOO much) just be yourself. You must hear it alot, but it is true. if he is still smiling by the time you feel the conversation is over, give him your number. If a girl did that to me, I'd be all for herWhat is the most effective way to flirt with a guy?
Flirt with your lovely eyes and rediant smile. Go to YouTube.com and learn flirting skills there.
Brush your boobs against them.