FREE SLURPEE FROM 7/11 TRICK!!!! (ALWAYS WORKING!!) (EASY)

I am the Albert Einstein of this millennium. I am quite possibly, the smartest being ever born, just for this idea. This method may not work with people that have missing, disabled, or crippled limbs

1. Find a 7/11
2. Enter said 7/11
3. Grab a 2 cups
4. Fill 1 cup with the slurpee you want to drink (I recommend mountain dew flavor because its yummy :P) and the other cup with coffee
5. Throw the cup of coffee at the cashier
6. Leave the store with your slurpee 

You could also get a soda instead of a slurpee, I don't know if it works though