The young twerp initiated and created the situation with his fart machine.

It's a "prank" on folks he does not know, and the "prank" is based off of a forced misunderstanding.

The old timer felt that his wife had been disrespected, and rightfully so, even if it was not a real fart.

The young twerp should grow the fuck up and realize he created the situation and NOT act like he's the victim afterwards.

The young twerp should have been more apologetic and owned that it was his fault, 100%.

I'd give the old timer a pass for being protective of his wife.