You shouldn't yell in public.
Frank, who went with a friend to a food festival, is lost in a crowd when he sees his friend some distance away.
Frank wants to meet up with his friend.
Frank waves his arms wildly in the air until his friend sees him, then motions for him to come over.
Frank shouts towards his friend and hollers that they need to meet up and figure out what to do.
The people near Frank think he's acting weird, but then realize what is going on and are OK with it.
The people around Frank are annoyed and cover their ears, telling Frank to be quiet.