look up any word, like pussy:
 
1.
A phrase used to describe various administrative tasks that occur on a Sunday, such as putting a washing in, doing your supermarket shopping or doing work for your job that has to be done for the next day.
"What are you up to today?"
"Ah...just the usual Sunday Admin"

"Oh no, I can't tonight, I've got Sunday Admin to do"
by Sparkle Echo July 06, 2012