In a blender, combine ice cream, milk and vanilla extract.
Blend until smooth.
Pour into glasses and serve.
It's THAT easy. What did you think it would be? Rocket science? This is a generic, NON THEMED plain vanilla milkshake! NOW...if you wanna get fancy...add some chocolate syrup, some of your favorite berries or even some root beer! Experiment with your milkshake theme and see what tasty new milkshakes you come up with!