Top Definition
An incredibly attractive female with an upbeat disposition
Man, have you seen the lunchboxer's girlfriend, she's such a sunnybunny
by Paigow July 28, 2005
1 more definition
A coke-addled nymphomaniac prude who loves lunchboxes.
Most American Idol fans are sunnybunny.
by paigow's little helper May 04, 2005

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