Bring Back the Manners!!

Manners... That word sounds so old fashioned, yet why should manners ever go out of style. I realize that I work with teenagers--this is not exactly known as the most polite age group. Maybe I expect too much. For example:
Please should follow a request.
Thank you--say it!
Make eye contact when talking to someone.
Hold doors!
When making a request, phrase it as a question, not a statement. (Don't tell me you need to go to the bathroom, ask if you may go to the restroom.)
When borrowing from someone, take care of the borrowed items.
I don't need to know exactly what bodily function you are performing in the bathroom.
Girls, sit with your legs together!
It is possible to burp politely--close and cover your mouth.
For heaven's sake, please don't make out for 5 minutes 2 feet from my classroom door!

I could go on, but you get the point. For some reason, adults in my generation seem to have the attitude that they don't want to be so uptight about manners. Next thing you know, I have boys pushing me out of the way to go through the door first, and girls yelling across the classroom they need a tampon. Yikes. I'm thinking uptight is a good thing!

Eventually we will get disgusted with our animal-like behavior and realize that manners aren't such a bad thing.