You are all right.
While obviously, opinions about this or that behavior have never been exactly the same throughout any society, in the past few decades, there have been some significant changes in a number of societies, including the US.
But understand that mine is the perspective of someone who will turn 58 in August.
If I were in my 20s, or even my 30s, I'd be one of the ones emphatically asserting that there had NOT been any huge changes in society between my high school days and the present - and I'd be right!
What is intriguing is this: We can all agree, I think, that one of the biggest changes any of us has seen in our lifetimes, even if we are in our early 20s - is technology.
Now wouldn't you think that the technology of cell phones and internet, that can turn even one instance of trashy behavior - or just a really unfortunate teen fashion choice - into a permanent, indelible record that will be available for viewing by one's grandchildren, and their grandchildren, not to mention potential employers, would make people less likely to engage - at least publicly - in things like pulling up of shirts? (Throw me something, Mister!).
In the public displays of affection common in Olden Times, mucous membranes were not visible to observers.
Yet we do see a definite increase in life imitating art (reality shows are art, whether you like them or not) that runs right alongside the popularity of Tila Tequila and Bret Michaels, and the doings of all those contestants hoping to win their love!
And guess what! One of the main reasons we are seeing that increase is because of all that technology!
In Olden Times, what happened at Mardi Gras stayed at Mardi Gras.
Today, it's up on youtube within the hour - and sent out to the contacts list of any number of people who had their cell phones up and clicking when it happened!
The same goes, of course, for Spring Break, and prom, and graduation night, and New Years Eve, and well, Tuesday.
Yet people keep on imitating reality show hamsters anyway!
So maybe somebody can explain me THAT!
I look forward to hearing your theories!