The video shows a guy in blue shirt wearing a backpack and has huge eyeglasses walking around some stony environment. He tells the camera then that some total jerk commented on his laugh being gross. So he decided to turn around and came up with the best comeback.
“Yeah, well your face is gross!” he exclaimed as he seemingly descends stairs then laughs. Although that was an impressive comeback, I think laughing it off made it all perfect. But yeah, his laugh does sound really weird, but let’s not point that out.