1 definition by Richard Seguritan

the practice of chewing twigs; predating Islamic culture, chewing twigs was the only source for oral hygiene. This trend has died with the evolution of toothbrushes and toothpaste, but recent scientific research still regards chewing twigs at the same orally hygienic standard as the toothbrush.
"what are you . . . chewing on a stick?"
"No, I'm birching."
by Richard Seguritan April 1, 2007
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