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1.
the act of shitting in a girls vagina and then eating it out.
Jesse: Kris gave me a "navajo taco" last night and i'll be cleaning it out for weeks!
by dj kris November 06, 2010
 
2.
A disgusting twat that wreaks of "fire water"
"I'm not banging Nick's sister ever again! The bitch has a nasty navajo taco!"
by Nick J. Christie November 23, 2006