Wait a minute Zentrode, he hasn't gotten it completely wrong..
TobiTobi, learn something here.. there are a set of stages you must go through to come out at the end with a girls number in your hand and a planned or spontaneous date. Jumping from the opener straight to the close WILL NOT WORK.
Now don't get me wrong, I've used tic tac to a lot in class as an opener but saying "If I win you can treat me to some coffee, if you win you can treat me to some coffee...win win situation for you" will immediately lower your value. What would be the point of her playing tic tac to? You would have the same chances of asking her out on the spot and the probability of her saying yes... improbable.. you'll also make her feel very uncomfortable and she may avoid you in the future. It'll only take her a simple "sorry I need to concentrate on this work" to blow you out.
Now what I would do is first change your mindset of how to approach women, this can be done by reading "mystery method, how to get beautiful women into bed" which you can find in your nearest book store. And secondly, change your opener what I do with my tic tac to opener is add a little fun to it, even better if she's bored.
*Draw the tic tac to bored with a X or O in one square* "Best 2 out of 3? You're going down!" and keep playing until someone has won. If you get caught, laugh it off and say we'll play again later. If you take up too much of her time say "wow did I just distract you from your work? Well tell you what, how bout we head to the library and go over what we got taught today" and you have a second meeting, simple
Good luck man.
Happy Gaming
AFCCoffee