Top Definition
When diarrhea is evacuated from ones anus while they are vommiting. Barfarrhea is caused because when a person wretches they involuntarily squeeze their bowel muscles used to clear the colon as hard as they can.

Barfarrhea is likely to occur when one suffers from food poisening.
I was barfing into the toilet and a puddle of diarrhea was under me when I finished.

I was going diarrhea and I had to vommit on top of my feet.
by Funny Bunny November 29, 2004

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