he bursts into laughter, propping his chin in the palm of his right hand. his eyes twinkled in glee, simpering at the student in front of him. "childish?" he queried, smirking as he shake his head. "ah, you adults are soooo boring! come on grandpa, you're no fun!" he bantered, giggling as he tilted his head.
he huffed, and beamed for a second, turning his back. "ah, you're no fun. see ya grandpa." he grinned, waving his hand as he started walking away clutching the strap of his backpack.