Must be a legit alcohol drink, no roofies, x, etc. I know how you sick fuks operate.
Her'es mine:
1 shots absolute pear
1 shots peach schnopps
2-3 shots apple-cranberry juice....
Here's the kicker... She will be so busy having mouth orgasm's that she won't even taste the shot of everclear that you put in the 2nd drink. Make each subsequent drink (every other drink after the 2nd for the uneducated aka you guys) just like the second.
The panties drop like my balls did when I was 9...
Note: If you are risque, you can try 2 shots of absolute pear.
Note #2: You could also try 2 shots of everclear, but that means you are a pussy and either A. your girl can outdrink you, or B. you can't get laid unless she is passed out.
If you are in situation A, I recommend sending a search party for your second testicle.
If you are in situation B, in addition to the search party, find some sponges and soak them in baby oil, roll them up, and well... do what 75% of these sick fuks already do,