Top Definition
An acronym meaning Sleep And Do Absolutely Nothing Day. Used as an adjective for a shitty, boring, hangover, or otherwise really slow day at home.
#1. Because I was sick with a fever and it was raining all day,
I had a sadand day.

#2. Although Ryan had to turn in a project he hadn't even started today, he instead stayed at home and sadand'ed it up.
by reditalia593 March 14, 2010

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