The act of picking up a girl at a Walmart, taking her home to have sex with her, and when you are about to cum, you pull out, put a plastic Walmart bag (must be from a Walmart) over her face, and ejaculate onto the bag that is now covering her face.
Person A: Dude, I picked up a girl at Walmart last night.

Person B: Oh, nice! Did you give her a South Carolina Windshield?

Person A: Yup! Luckily I had a Walmart bag lying around at my house to put over her head to cum on.

Person B: Good, cause everyone knows that without a Walmart bag, it's not a South Carolina Windshield.

Person A: Yeah, that's a necessity for a proper South Carolina Windshield
by SleevesAreFascistPropaganda September 20, 2018
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While two men are having missionary style sex, the receiving individual in the bottom position rubs his preferrably moist, erect member across his lover's belly in a sweeping motion, comparable to that of a windshield wiper.

The windshield wiper can also be enjoyed by straight and/or lesbain couples with the assistance of strap-on dildos.
Call the Mechanic! That windshield wiper only made things wetter!
by Spase Peepole January 29, 2004
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Step 1) Grab a well cooked potato
Step 2) Drill, or mash a hole in it, the shape and/or circumference of your penis
Step 3) Find a women who is willing to do go through with this
Step 4) Insert potato into preferred orifice
Step 5) When she has to shit, make sure to get it all over that damn potato
Step 6) Pull out when your ready, and jam the fucking potato in her mouth
Step 7) Make sure to leave a hefty facial, then rub all the shit, and whatever else managed to get into the mix, over her face, then leave to eat the potato
Step 8) Make sure to lock the door on your way out
Philipson: So did you give her the idaho windshield wiper?
Timothy: Fuck yeah I did, that bitch never saw my spud coming.
by Mr. Starfruit May 7, 2016
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The act of cumming on someones glasses, and then wiping with your shit covered ass hair
hey i gave dave a louisiana windshield wiper yesterday
by wtfmeinda ass May 15, 2010
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A sexual act where after performing anal sex on your partner you helicopter your penis on the partner's stomach leaving shit streaks
Eating corn on the cob before sex ruined my plans to give my girlfriend a Brownsville Windshield Wiper
by BrownsvilleBob May 5, 2016
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When a girl gives a guy a hand job and he busts on her hand she proceeds to wipe the cum on the guys face.
Dude, i was getting a great hand job and all of a sudden she gave me a dirty windshield wiper>
by nippleteaser7 May 16, 2010
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When your balls are too heavy to do a full helicopter rotation with your dick, so your penis just flops over in a half circle- much like a sad, lazy windshield wiper.
Tyler tried to cheer me up, so he whipped out the lazy windshield wiper.
by Butter Razor April 23, 2019
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