Dirty baking 

After a man ejaculates in a girls ass, she lets the goo drip into her pussy with the end goal being pregnancy.

Johnny comes in his girls butt in the doggy style position and she lets it slide out and go into her pussy in an attempt to become pregnant... Dirty Baking...

Dirty baking by DrewiswerD April 13, 2009

dirty bajingo 

a female who is particularly nasty, especially when it comes to her personal or sexual hygiene. Also a female who is known to be a slut, or who has been known to have toilet paper in her vagina.

"have you met Brian's new girl?"
"yeah, she's a total dirty bajingo"

dirty bajingo by TimeRacer March 12, 2010

Dirty backing 

Is a bad mistake. When you make the intoxicated decision to bare back a dirty girl. the only thing that can make this worse is if you leave her with a creampie

I creampied that dirty girl last
-you dirty backing son of a bitch

You dirty backin son of bitch

Dirty backing by JsmooveSon69 April 25, 2015

Dirt Biking

When you stick your arms out in front of you as if you were dirtbiking, then pretend to ride a dirtbike by running around and making loud and obnoxious dirtbike sounds at the top of your lungs in a public area. May be accompanied by dirtbike gear. Usually, a bout of dirt biking is accompanied by wipe-outs, where you do a spectacular crash and make sputtering sounds. Afterwards, you can pick up the bike and do a sweet wheelie to get out of there.

Guy 1: Man, did you see that plank I did?

Guy 2: Planking? Everyone knows dirt biking is where it's at!

Guy 3: Ya, I just went dirt biking in Wal-Mart!

Dirt Biking by p00nwrangler August 28, 2011

Dirt Biking

When one person lets there asshole get all disgusting and dirty, then another has butt sex with them (usually done messy)!

1) Dirt Biki- My ass feels so gross, but it will be worth it tonight when I get dirt biked!

2) Dirt Biker- Man I can't wait to go dirt biking tonight.

(friend) -Wow, thats pretty sick.

Dirt Biking by Wood9412 February 13, 2009

Dirt Biking

verb When a male rubs his dick on a girls ass while she proceeds to have diarrhea.

Betty and i were dirt biking so hard last night that the dirt splattered everywhere!

Dirt Biking by O.G. God February 22, 2011