A synonym for drinking. Could be used just for fun, or as a more passive way of telling you friends and family you're an alcoholic.
Mom - so what did you do last night
You - stayed in, marinated the liver
Mom - you shouldn't eat so much red meat

Friend - what are you up to right now
You - just marinating the liver
Friend - dude, it's noon on a Wednesday...
by THE Rocketmanrc May 1, 2010
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