look up any word, like bae:
 
1.
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
 
2.
A coke-addled nymphomaniac prude who loves lunchboxes.
Most American Idol fans are sunnybunny.
by paigow's little helper May 04, 2005