Top definition
A chant made up by KU science professors back in the day. Due to the limestone, chalky rocks found near the University of Kansas campus. Also Chalk is about the only thing that rhymes with jayhawk. Used by Kansas fans during sporting events.
by Doug C January 30, 2005
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2
One of the most inane chants in the history of collegiate sports. KU students will, in a very Tourette's-like fashion, break out the phrase at seemly random, inappropriate times. They tend to attach a "man" or "motherfucker," further implicating their level of douche.
"Our football team is undefeated, and who gives a shit if our strength of schedule was below Yale's, rock chalk"
"We'll forever harbor extreme resentment over the departure of Roy Williams, rock chalk"
by David Colfax March 30, 2008
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3
typically used to describe large amounts of gay sex, sometime even without vaseline
the guy in kansas shirt, just leaving his room with his boyfriend, said he loves rock chalk.
by kUJayhawk February 12, 2009
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4
Something that is definitely going to happen, there's no doubt about it. It's guaranteed.
If Scott and Jamie got into a fight then it'd be rock chalk that Scott would K.O. rickshaw Jamie.
by Dave.R. June 30, 2006
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The vengeful act of crapping on a lover's chest while they sleep.

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