Degenerates.
A real weirdo.
Pulling out a gun and showing it off to a couple of random strangers he just met on the street. Then leaving it on a chair as if it’s a play toy.
Next he starts getting fresh, and coming on strong, to the stranger’s wife. After all, they must be “swingers”! Why else would they agree to join him in his hot tub?
The strangers are duly offended, and prepare to leave. He ostensibly claims the strangers stole the gun that was earlier laid aside. So he brandishes a 2nd gun and then fires it 3 times at the male stranger, killing him.