Strip Darts! Another StripArcade.com original.... Hold down the Green dart and your Aim Controls will appear. Release the dart (mouse) when you're ready to throw. Nail the number Rednecca wants you to hit and she'll start dropping her rednecky clothes. Careful though, if you miss you'll just piss her off. After 25 missed hits, ALL her clothes go back on.
After you get her completely nude, the speed goes up quite a bit, but see if you can hit at least two more numbers. I've done it a couple times, but it ain't easy.