A person of a very sweet disposition/nature that can be a little anxious at times, much like a rabbit.
When given the opportunity, will act extremely overactive and energetic, hence the 'spaz' part of 'spaz bunny.'
The spaz bunny spazzes in such a manner that it appears slightly cute.
Usually applied to a person of effeminate/girly nature.
Her friends liked to call her a spaz bunny because she was so jumpy, but it was also adorkable to see.