Shake; strain; up.
Jeffrey Morgenthaler promises it "tastes way better than it sounds."
Punchdrink.com also suggests a frozen version, with 3/4 oz. regular simple, blended with ice, and garnished with a lime wheel.
David Cordoba, 28 Hongkong Street, Singapore
Jägermeister, Triple sec, Lime juice, Rich simple syrup 2:1