A bowel movement that is very substantial and quite abnormally large. Typically this fecal matter fills the toilet's water drain hole and coils around the toilet bowl basin in a snake like fashion.
Matt: Oh man, I ate too much food for Thanksgiving! You guy's might want to stay out of the bathroom for a while. I just took a massive navarro
by Parkerdog December 01, 2011
Quite possible the most amazing and popular surname of Mexicans.
My last name is Navarro, like Dave Navarro the heroin addict.
by lameyjamie July 22, 2009

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