Ferrari Engines
The powerful purr of Ferraris and other ridiculously powerful cars have been proven to elevate testosterone levels in women’s saliva, indicating an increase in sexual arousal. Don’t own a Ferrari? You’ve got a few options. You could find a luxury rental car operation, such as Gotham Dream Cars, and sacrifice a month’s salary (or the black market cash equivalent for one of your less popular internal organs) for a few hours of horsepower. Alternatively, buy a $100 set of great speakers and invite her over to play Star Wars Battlefront.