It's rude to shout things at people in public.
Jared is out on a dinner date with his new girlfriend Lisa, and they need some menus.
Jared wants to get the server's attention.
Jared calmly signals with his hand after catching his server's eye across the room.
Jared rudely yells across the room that he needs some service at his table.
Lisa think that Jared is polite and professional and a good boyfriend.
Lisa thinks that Jared is boorish and breaks up with him shortly after.