Arse crack 

The void between the two bottom cheeks.

'You could park a bike in her arse crack!'

Arse crack by Peter Lawson February 1, 2009

arse crack ya 

when a male or female puts there index finger down the crack of there arse then rubs it under the nose of there victim, releasing the sweaty stench

dont be so mean, or i'll arse crack ya!

arse crack ya by matthew sopp April 24, 2007

arse crackers 

The little bits of poo which can get stuck in the hairs around your bum hole and not get found till dried out, the next day

Billy was in a hurry wiping his arse and carelessly left some arse crackers which remained undiscovered till he wiped again the next day.

arse crackers by Faisal91 November 23, 2013

arsecrack 

noun, the buttocks gap

This is the interval between the buttocks.

He stared at her arsecrack as if staring at a masterpiece of nature.

arsecrack by Tiago Zuhr August 25, 2008

arsecrack 

The source of various beautiful entities such as arsegravy, arsemonsters, and in the case of people with their heads lodged up their arses, chatter. This latter example can be summed up with the increasingly popular yet still underused phrase "chatting out of one's arsecrack".

We salute you almighty arsecrack, the symbol for all things good and pure. And if anyone disagrees, they are chatting out of their arsecrack!

arsecrack by Jimmy Bob-Bob March 25, 2012

chatting out of one's arsecrack 

To most this phrase seems unfamiliar until it is explained that this is the historical precursor to the frequently used and highly popular word chatinowtuvisarscruck, most commonly heard whilst urinating in the vicinity of a public house or bar. After decades of research, linguists have finally concluded that the genesis of this phrase dates back to 1654 when early missionaries discovered the small mid-pacific island known locally by the mutant inhabitants as Paaahrrrrumpiturrruumph, their erroneous DNA strands having caused each of their digestive-vocal systems to have formed backwards. In modern times, the phrase has become synonymous with the performances of the UK's one man freak show "David Cameron", who has yet to utter a single a word that has not been born from within his arse, as this is where his head is permanently lodged.

"I have reason to believe that the message one is currently attempting to convey may not be entirely true, or at least is to a significant degree fabricated. Therefore, I find it not disproportionately crass to assert that one is chatting out of one's arsecrack!"

chatting out of one's arsecrack by Jimmy Bob-Bob March 25, 2012

arsecrank 

It a the move used by many women to feed on young men..
it is when the women puts one arse cheek over a mans head and tightins up another check snapping the neck of the helpless male

man - tell dat to sandra
odr man - no she'l arsecrank me big style

arsecrank by conor kavnagh April 6, 2008