Frozen Matador

1 1/2 oz Tequila
2 oz Pineapple juice
1 tblsp Lime juice
1 stick Pineapple

Blend all ingredients (except pineapple stick) with 1 cup crushed ice in an electric blender at a low speed for a short length of time. Pour into an old-fashioned glass, add the pineapple stick, and serve.