Play around with hydral pistons at a lowrider car.

Eazy E made this word well-known by his songs Switchez and Still Cruisin.
Verse from Eazy E´s Switches:

"Cruisin in my 64 ragtop

I got alotta juice alotta fuckin block

Now when I hit the switch I'm bouncin

More bounce to the ounce and I'm clownin"
by vipera January 9, 2012
From 2Pac's rap classic "How Do U Want It." In it, 'Pac says "I'm hittin' switches on bitches like I been fixed with hydraulics." The phrase means that you make all the nastiest, smoothest moves when it comes to sexin' your lady of choice. For added effect, many times one might pretend to be flipping switches and make a variety of sounds that might be heard on a car with hydraulics, because that "bitch" was bouncing up and down and putting on quite the show. Well done.
"When I was breaking in that one trick from the bar last night, I was hittin' them muhfuggin switches, boy!"
by xyourxworstxnightmarex February 1, 2005
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.
by playaplave January 19, 2006
Engaging the hydraulics system in your slab
Man, we thought his ride was a hoopdie but when he hit the switch we knew it was a slab

Imma hit a switch, imma get hyper, maan where that shit at? Pass my damn lighter - Big Tiger - Drank Up In My Cup - Swishahouse Classic Flows Vol 1
by Ash HTX December 30, 2011
To have a mental breakdown. Used in the song "Panic Switch" by Silversun Pickups.
Scott, come home NOW, these kids are driving me crazy, I'm about to hit the panic switch!
by ergo lady February 10, 2010