Top Definition
A superhero homeless person.
Skippy the wonder bum saved New York City from a meteor
by EllaGetsA5 November 04, 2009
5 Words related to WonderBums
The British answer to WonderBra! Butt bra that enhances the buttocks.
'Binikis' are wonderbums that come in two pieces: the lower piece accentuates the butt for that 'fuller', uplifted look.
by hammer---;, hytham April 10, 2007

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