The phrase "nut bars" is a slang term that refers to someone who is crazy, eccentric, or mentally unstable. It is commonly used to describe someone who behaves in a strange or unpredictable manner.
Sentences with «nut bars»
Enjoy these awesome sugar free chocolate nut bars today! (drjockers.com)
I would think it would, as it shouldn't really be harder for the processor that raw nut bars although I think definitely better to divide the quantities. (deliciouslyella.com)