Top Definition
After suffering from bum dew for a prolonged period, a small stream or river can form, know as a bum river. Light coloured trousers (pants if you're American) should be avoided.
A bum river can sometimes be seen on leather car seats on a hot day or when a lard arse (somebody who regularly attends weight watchers and McDonalds) attempts to exercise.
by TW_h900 March 09, 2007
7 Words related to bum river

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