Top Definition
Backyard Colonic is a hygienic procedure by introducing a stream of water into the body via the anus at relative high velocity with a garden hose. This procedure is typically conducted in preparation of vigorous anal sex session. The first backyard colonic was performed at a hippie’s cabbage patch in

Berkeley, California hence the origin of the name sake.
Mike had diarrhea but wanted a gang bang with a bunch of dudes at the local La Quinta so had a backyard colonic by the parking lot dumpster.
by @assonance December 10, 2013

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