A family trip to the zoo ended about as badly as it could have for one sweet old lady.

Check out this video of a chimp firing excrement at a grandmother at the John Ball Zoo in Grand Rapids, Mich.

You can see the animal rear back and toss the fecal matter, but you really get an idea of how gross this is when the camera pans to the grandmother and we see the waste smeared on her face. Short of getting caught stealing the little packets of jelly from a restaurant, this is probably the most embarrassing thing that could happen to someone's grandmother.

Bottom line: no grandma deserves to be treated this way. This sounds like it could be the beginning of the next Planet of the Apes movie -- we go to war because chimps are rude and have no idea how to treat nana with the respect she deserves.

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