What does ornery spurts of energy mean?

"Ornery spurts of energy" refers to sudden, often unpredictable bursts of energy or activity that may be accompanied by a cranky or irritable attitude. The term "ornery" implies a stubborn or difficult disposition, suggesting that these energetic moments might be coupled with a sense of frustration or agitation. This phrase could describe someone who, despite feeling irritable, experiences brief intervals of high energy and activity.