It’s always been yup for me.

It used to be yep.
But the Russians can’t pronounce yep, so they talked Donald Trump into using yup in order to influence the public. And it worked!
If you listen real closely, Trump says yup instead of yep.

I never saw the spelling “yup” until about 3 years ago.

I just read the entire original post. I had to LOL a little. Yep is short for yeah? Don’t you mean short for yes? Yeah is slang for yes already.

Dunno. Young people, I guess. I started seeing “nom” become more popular through the internet, particularly with images of animals eating.

@Kardamom
Exactly!!
Three years ago. Do the math…

This is like Frikkin’ and freakin’.

Prank and crank.

I think it’s parts of the country. Maybe now that we see so much written slang on Facebook we become more aware of how others write, or even pronounce these things.

I still shake my head that so many people right yeah instead of yay when they are celebrating something. They didn’t learn to read and write phonetically I guess.

Don’t know when. I use both.

We’re becoming a world of writing and it’s simply evolving to sound more like the speaking version of the language.

Westerns

It didn’t. They both have always been around.

When all the dyslexic dogs took over the pound.

Young Urban Professional, is what YUP used to be (around here).

I use them interchangeably.
Yep, when I want to acknowledge in a enthusiastic manner.
Yup, when I intend it to be a short, less enthusiastic one.

Both show up in 1891 according to Webster’s. Might matter if you’re from the North or South, East or West.
I never say “yep” or “yup”” just “yeah” and “yes.”

I just realized I used to hear yep-pers. Almost said like two separate words.

My girlfriend (and all her siblings) uses “yeap”.

I’ve always seen both.

I say “yup” or “yeppers.”

Yep did not become yup. Yep remains yep. What people around you tend to do is just what they’re doing.

To me, “num num” is a Star Wars character and someone using it to mean “yum yum” isn’t something I’d understand.

“Nom nom” I think means “sound effects” for eating something, not the same as “yum yum”.

“Yum yum” is just “yum” said twice.

Lol. A friend of mine just wrote yeppers on a status of mine.