My morals don't stand at all.

But. Yelling on your phone in public is a no-no. Sorry to say, but I'm not interested in your private life. :c

There are a lot of things that I consider bad manners. Talking loudly in public (phone or in your 'friends' club) is just... UGH. No one is interested in your conversation and the least you can do is tone it down a bit. Don't disturb other nods

Or when someone is giving a lecture and a some people aren't paying attention. Giggling and (softly) talking during that lecture and in the break complaining about how boring it is... JUST LEAVE THEN PLEASE! Some people are paying attention.

8D there are lots of things that I consider bad manners... but naming them all would be a bit too much.

conversational bad manners are some of the worst: asking a question, then interrupting to ask another mid-answer, obviously not paying a lick of attention to somebody when they're trying to have a conversation, interrupting a conversation to talk or text on your cellphone, talking with friends all the way through a movie, loudly discussing extremely personal matters in public, allowing your kids to scream, whine and otherwise act disruptive in public, talking with a mouthful of food.

personal hygiene rudeness, pretty much any of this in public: self grooming, picking your nose, adjusting your underwear or genitalia, sucking food out of your teeth, digging around in your ears, farting or belching loudly and grinning like a slackjawed idiot in pride after doing so.

generally, just behaving as though other people don't matter around you

Heh. Manners.

Hold the door open for people if they have their hands full, never curse in front of an elder or superior, anticipate what people need before they have to ask for it, say please and thank you, never talk with your mouth full, never slur your words, never shuffle your feet, never smile at a couple, don't fart in public, burp in public, smack gum, pick your teeth, or stare, never read when someone is talking to you, offer people food/water/snacks if they are at your house, never accept food or water that is offered to you (the first time), never use your cellphone in public or while driving, offer to pay for your food/tickets/whatever AT LEAST once, never ask for seconds unless it's offered, never say "Whatever," "Shut up," or roll your eyes, ad infinitum.