Top Definition
The after effects of consuming large quantities of opiates, like Hydrocodone. Especially from snorting. Symptoms are rabid itching, bloodshot eyes, burned out nasal passages and a general feeling of wanting to die.
-- What's wrong with Craig? He looks like an f'ing zombie!
--It's just the Hydro Hangover.
by mariposa1984 September 24, 2009
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