A young man was making himself "hotdogs" in the back of the house.. Rather, in the yard. You could see that he was disabled. And he sat in a special chair with wheels. Despite this, he seemed to be in a good mood. He is hummed a melody until..You didn't make a sound or noise ...he noticed you and looked at you at a loss or confusingly

"What the..."

He wasn't aggressive. He was... a little shocked. And confused.