Top definition
Any week in a month which is pre-determined by a group of friends. During this week you may randomly insult, assault/attack and or wrestle your friend with no repercussions due to the fact that it is Fight Week! Can take place in any location such as amsterdam for example.
*Charlie Punch's Owen in the Face!*

Owen: "What the hell was that for?"

Charlie: "Its fight week baby!"

or

Owen: "Charlie you are a useless sack of shit!"

Charlie: "Are you forgetting its fight week?"
*Charlie punches Owen in the face!*
by Silver Back and Tiny Bicep October 13, 2010
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