Alcoheadache Share definition Flag A slight feeling of being hungover. Not to the point of puking but enough to make your day difficult. Man, I had a few too many last night, now I've got this alcoheadache Alcoheadache by That Second Other Guy August 29, 2009 0 0 Get merch Get the Alcoheadache mug. Buy Now — $32.95 See more merch