He jumped up and down.
He swung his new belt over his head like a lasso.
He danced around in circles.
He assumed the "Rocky" pose (I didn't even know he knew who "Rocky" was.)
All from the back row of the class, while little lines of white soldiers stood solemnly, exchanging their old belts for new, and hanging their old belts around their necks. Finally his instructor had pity and went back to calm him down and help him with his new belt.
I am SO proud of my son!