Dirty Windshield 

When a male takes his penis and rubs a vagina vigorously right to left while she is urinating, both male and female get urine splashed on them.

I walked in on my grandpa giving my grandma a dirty windshield and I got pee on me.

Dirty Windshield by Slingblade1170 June 11, 2016

Dirty Windshield 

A sexual act where one person wraps his/her head in saran wrap and watches as the asshole opens and closes from another person who is crapping on thier face.

Guy 1- "I heard Tommy really loved it when Janice gave him a DIRTY WINDSHIELD"
Guy 2- "I heard that also..."
Guy 1- "Could you give me a DIRTY WINDSHIELD?"
Guy 2- " Oh but of course!"

Dirty Windshield by PA Control January 12, 2011

Dirty Windshield 

When you are having sex and 'skeet-skeet!' on the girls face. Then, use your penis to wipe it back and forth like a windshield wiper and smear it on her face.

"This girl was doing the deadfish in bed so I gave her a Dirty Windshield."

Dirty Windshield by supergirlreceptionist November 2, 2011

dirty windshield 

placing goggles or other form of eye protection on a person and then defecating or rubbing fecal matter on the goggles.

dude last night i gave my girldfrind a dirty windshield.

dirty windshield by twizzle September 3, 2006

Dirty Windshield Wiper 

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>

Dirty Windshield Wiper by nippleteaser7 May 16, 2010