Meeting a woman on the dance floor can be tough. it's loud, it's crowded, you are desperate.
Don't fret. Here are some moves that have worked for me and they will work for you.
Move #1 grab the ass
This is best done in the later part of the evening also known as "prime time" which is generally between the hours of 2 and 3am.. Why is it prime time? By this point in the evening the ladies have had a fair amount of liquer in them - typically bought by other guys who didn't know to wait u til primetime to make of their move. Also, if they have not yet gone home then you can be fairly confident that they have dropped all pretense that they've gone out to "have fun with their girlfriends".
Best thing to do this in this situation is to go onto the dance floor and grab ass. Chances are you will be slapped. Even if they don't well then there's only a 1 in 10 chance she'll come home with you. these are not good odds.
Move #2 erection on the dance floor
A bolder move, which works best in a hip-hop/r&b/reggae environment. There's not much to explain with this move but I cannot stress the importance of execution. Between your jeans, her miniskirt, the rhythms Sean Kingston, you got to make sure she feels that hard-on. It's a lot of pressure, but you gotta show her how much you like her.
Move #3 on the couch
So a friend has introduced you to a nice girl he knows from college. She's not so into the dance floor and so you offer to keep her company. You listen attentively and ask her questions to get to know her. You pick up on common interests and use your natural wit to make her laugh. You complement her on how great she looks even though she just put on something on last minute. You take her hand and put it on your slacks where she can clearly feel the outline of your erect penis.
If she hasn't slapped you at this point, then like EA sports, it's in the game.