Top Definition
When someone drinks so fucking much on a Sunday that they are unable to function on Monday. Work and any other other "real-life" responsibilities are of the least concern during a meatball day. Meatball day > 8 beers in an afternoon. Meatball days generally result in PTMDS (Post Traumatic Meatball Day Stress) through Thursday of the following week. PTMDS completely resides by Friday afternoon at 3:00.
Looks like Greg had another Meatball Day!
by Dan Victor November 23, 2013

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