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2.
a fictitious (imaginery) week when country people come to town; a time of year when stupid things happen.
(Someone has sone something stupid - i.e leave the door/window open when it's raining, left the milk out on a hot day...etc)

Response: What do you think it is? Bushweek?
by Boniie August 08, 2009
 
1.
A Week Where One Can Do Anything Without Hassle
What Do You Think This Is, Bush Week?
by Paul Paul & Stefels March 10, 2004
 
3.
Orientation Week for second semester at university.
Bush Week is not an allusion to the colloquialism referring to a woman's genitalia, at least... not intentionally.
by Kit Scheherazade July 17, 2008