butt crack of America 

A phrase used to describe Oklahoma.

Person 1: "Why did white people make the Native Americans move to Oklahoma?"
Person 2: "Because Oklahoma is the butt crack of America."

butt crack of America by Meanpie November 18, 2016

Climber's Crack

When you're dangling off a rock face and your ass crack is so wet that you cause a mini waterfall over the rocks that you are actually climbing sometimes causing spillage on the people belaying you.

Dude, that was such a hard climb that it caused major climber's crack and the poor chick below me got a mouthful of ass juice.

Climber's Crack by soulsurfer78 October 30, 2009

Australian Crack Shack 

CODE NAME FOR
kinky sex in a bungelo on the peak of a moutnain, with seals cheering you on, and then they go do kinky sex while you cheer them on.
abriviation
ACS

Miranda: Want to Go the the Australian Crack Shack?

George: Yea lets have ACS time =]

Sarah: Im down.

Australian Crack Shack by sarahymiranda March 19, 2008

Karachi Crack 

A bad case of 'the shits' brought on by an extremely hot curry the night before.
Much, much worse than Bombay Bum and Rhino-Eye as, in this case, the arse crack feels as though it has been prodded with a soldering iron.

"Oh shit Babes, you'd better put a loo-roll in the fridge, I've got Karachi Crack again"

Karachi Crack by Marko the Great August 29, 2005

toe crack 

the space between your toes

Damn, Nikky... you got a lot of cheese in your toe crack.

toe crack by nikki d 2.3 February 14, 2004

smoking the blue crack

Acting like a complete idiot. Presumably "the blue crack" is Drain-O Crystals. "Have you been smoking the blue crack?" is thus analogous to "Have you been drinking turpentine?"

Note that this usage pre-dates the use of "blue crack" as slang for Tylenol PM.

"A customer asked me today if I could see her computer screen through the phone. I asked her if she was smoking the blue crack."

smoking the blue crack by luvcraft2 May 22, 2009

high butt crack syndrome 

A contagious disease that affects young men (mostly) whos buttcracks are to high to fit in their pants. Most commonly found in groups of swagfags, ghetto wannabes, as well as "gangstas" as they put it. Can be cured with a belt or pulling up your pants. Also known as sagging.

"My brother lost his belt and now he suffers from high butt crack syndrome."

high butt crack syndrome by Batgirl052016 July 31, 2016