Smirnoff Iced Cake Vodka.
Dangerous stuff. Seriously. Tastes like frosting. Licking a(n alcoholic) cupcake. You can easily drink it straight. Keep it in the freezer so it's always chilled.
If you're mixing it, remember it's got a sweetened vanilla flavor to it, so mix wisely.
Although... Iced Cake Vodka and orange juice? Think it would taste like an Orange Julius Screwdriver? Guess I've gotta hit the grocery store for another taste test. Stay tuned... and stay responsible.