It’s what it’s.

Afaik, English grammar requires utterances with predicates to have a stressed element in those predicates. Contractions of only a subject and an auxiliary verb - ex: I am > I'm, he has > he's, they will > they'll - eliminate that independent auxiliary as a prosodic segment and violate that grammar.

A - "Who's going to the store?"

B - "I am." [ok] or "I'm going." [ok] (or "I am going."), but not "I'm." [bad, obvs].

I'm Henry VIII, I'm.

Relevant Tom Scott.

Some times that rule applies, other times it doesn't.

Shall we find a situation that's in the grey zone?

Yeah, let's!

You think it do, but it don't.

That "it's" is evil. It's going to be in my head for a long time

If I could add another contraction to that list, I'd

A contraction is a separate word, with its own accepted usages in the community. For example, “gonna” comes from “going to”, but is not the same, as “I’m gonna the shop, do you want anything?” sounds wrong

Ever since I was a kid, I've had the dumb thought that if you and your friends are imprisoned, you'd ask the warden to "let's out!"

The contraction literally isn't right. It only works with the adverb version of "have".

Some folks will never eat a skunk, but then again some folk'll.

'Tis.

I would never say YOU HAVE GOT MAIL without the contracion, I would say "you have mail", and with the contraction in the shorter sentence it sounds British to say: "you've mail"

English is three languages in a trench coat acting like one.

https://www.youtube.com/watch?v=fnrLOug3u6s

You wouldn't

As you all know, many posts are poorly censored to confound OCR. I don't love that, but it makes sense.

Sometimes I think things have been censored, but it turns out that they were simply partially obstructed by UI elements on my phone.

For this post, I had to try to figure out how "linguist" was offensive before I discovered there's apparently now an entirely functionless line that shows up on the bottom of my screen when opening images.

This must be why Data can't use contractions. Except in those episodes where he apparently can.