Top Definition
When an obese or overweight female is wearing a string bikini and her straps disappear in between her fat rolls giving an optical illusion that the bikini is not tied on.
Look over there and check out that "Bikini Houdini." That fat ass woman is wearing a bikini, but I can't see any of the straps because her backfat and fupa are covering the strings.
by megajewel January 23, 2010

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