1 definition by Rynomite13

Top Definition
The day after Sunday Funday, when you are hungover at work and feel dumb for drinking so much the day before.
I can't believe I drank that much again. I hate Monday Dumbday.
by Rynomite13 August 16, 2010

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug