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1.
A mix ketchup and pepper.
tyson: hey derek would you like some kepper?
derek: I'm ok bud see yea in awhile eh!
by connorsafag January 07, 2011
 
2.
Alteration of the word keeper. If someone is a kepper, you want to hold on to them and date them as long as possible.
"Dude, your new girlfriend is such a kepper."
by Cabarette April 30, 2008