This is Mareto. He is 2 months old and lives in Japan.
Here he is smiling up at his mother...
When all of a sudden, he surprises himself with a fart.
Hirohito told BuzzFeed News it was a miracle that Mareto's reaction was caught on video.
He said Mareto's mother Eri just happened to be filming and couldn't help but burst out laughing when it happened.