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1 definition by PlanxtyLewis

 
1.
A name used to refer to the combination of Jasper Hale (from the Twilight series) and Jackson Rathbone, who plays Jasper in the movie Twilight. This term is specific to the movie character, as opposed to just Jasper, or just Jackson Rathbone. Often the word is misspelled due to omission of the exclamation point.
Did you see paparazzi Jack!sper in the new MTV Twilight interviews?
by PlanxtyLewis April 14, 2008