It's wrong to masturbate in public.
Jonathan is feeling a lot of sexual tension and a little on the horny side while out at the park.
Jonathan wants some relief.
Jonathan gets in his car and drives home in order to pleasure himself.
Jonathan decides to jerk off behind a tree in the park to feel better.
Jonathan feels a lot better after it, and is able to head back to the park with a clear head.
A child walks up while it's happening, they call the cops and Jonathan gets arrested.