Refering to AIDS, and HIV.
I heard they had a bad case of the butt flu break out over at the Bathhouse.
by Shayne B August 10, 2006
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Acquired Immune Deficiency Syndrome-{AIDS}.
"United Nations Peace Keeping Troops have spread the butt flu all over Croatia."
by J.E. Walker April 27, 2003
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I stayed on the toilet all night because I had a major case of the butt flu!
by SarahH2o October 20, 2008
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