1 definition by FUmundamasta

A-nal Mouse {eyn-l mous}
noun
pl. anal mice

A type of white parasitic mouse that hides around your anus and in human rectums. Only lives there because of dirt and grime. Causes painful hemorrhoids and jaundice and painful erections in men. Attracted to fumunda cheese.

Cures: bleaching the surrounded area.

Men- wash fumunda out.
Kerry: "Oh James, why do you have a boner and yellow skin?"
James: "Um. I have the anal mouse."
Kerry: "You know they have stuff for that, right?"
James: "Yeah, but I also have chronic fumunda cheese disease."
Kerry: "Well, fuck you."
by FUmundamasta October 14, 2009
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