A term used to reserve one's seat while visiting the restroom, dancefloor or bar. Short for "Crack Crack Seat Back"
Fo' shizzle, I godda piss! crack crack.
by LloydG July 18, 2006
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Something you should never step on when you're walking on a sidewalk or else you'll break your mother's back.
7 yr old: "I dare you to step on that crack!"
Other 7 yr old: "Nah, I don't wanna break my mom's back."
by soowutthegreat January 23, 2021
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If the crack-of-dawn is early, then the crack-of-the-crack-of-dawn is even earlier. Hence, crack-of-crack.
I gotta get up at the crack-of-crack tomorrow 'cause I'm driving to Bakersfield. No Chappelle show for me!
by DK March 12, 2004
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Something sensational, excellent or cool.
Part of 'what's cracking'.
"That was a cracking pool shot!"
"Yo, 'what's cracking' fool?"
by Diego July 17, 2003
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1) In a nutshell, a highly addictive drug that is a combonation of two parts coke to one part baking soda heated to become one solid entity. Usually smoked through a crack pipe and has serious health threatening side effects.

2) The line between your butt cheeks. Often Exposed when one bends over while wearing pants that do not fit right!
by Amy O'Connor March 25, 2007
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