he laughed out loud

it was napping time. suddenly i heard rubenesh laughed out loud. This could probably awaken all the others! So i took my steps to the room. Yes, all had awoke, n i beat his mouth cos i already warn him again n again not to shout out loud.
Since all were awoke, so i get them to continue their homework and colouring. he's the one that still standing outside, near the playhouse.
After i settled the elders doing their homework, i turn to him and asked, "u berak?" he menggeleng kepala (mengeleng kepala, for indian, means --- 'already') "huh?! do u want to go to toilet?" he still menggeleng kepala, and answered, "yes." Indeed, he told the truth, he poo on his pampers.
Now i know why he laughed out loud. Maybe he wanna tell his friends he poo, and he knows his friends will laugh at him, so he laughed for himself first. i've misunderstood him.