1 definition by George15

An illness which inevitably sets in when one returns home from attending a music festival.

Causes include:
-Between 2 and 10 hours sleep over a five day period.
-Living in your own dirt.
-Shouting and screaming a lot.
-Excessive consumption of both legal and illegal substances.
-Being too tight to buy food and hence going without for five days.

Unfortunately, due to the self-inflicted nature of this illness little sympathy can be expected.
Is Louise coming out tonight?
No, she's got festival flu.
by George15 January 20, 2008
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