1) Activating hydraulics in your car, usually bouncing them up and down.
2) Having sexual intercourse where the penis alternates between going into the vagina and going into the anus of the girl. source: Girls Gone Wild, Doggy Style
1)Ridin around town in a drop-top Benz, hitting the switches in my black 6-4.
2) Last night, I was with Brendon, and he finally hit the switches on me. It was the most romantic thing ever.