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A hawt fun loving whore. More commonly found in cold dark places and will answer to the name of skank as well. A Cesny is not to be messed with and is most known for saying 'That's what she said' at any given moment.
Example #1:

Guy 1: Dauummmm, did you see that girl??

Guy 2: You betcha I did. She is a total Cesny.

Example #2

Guy 1: It's so loose and open!

Cesny: That's what she said.
by Gimpy03 March 03, 2011