Top Definition
Bum Fungus is a fungal infection of the outer colon.
Bum Fungus is usually found in the holes of Pregnant women, Acrobats and people named Robert.
by colin worth June 23, 2007
1 more definition
5 Words related to Bum Fungus
When one is so unhygenic they have fungus growing from their arsehole.
You smell so bad if you get any worse you'l get bumfungus.
by fuckfeatures92 April 13, 2011

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