Who uses ya'll as opposed to y'all? What would ya'll even be an abbreviation for...

unethical_ban · on Nov 29, 2017

As a kid I saw it both ways. Like "ya all" shortened to ya'll.

I agree that "you all" shortened to "y'all" is the appropriate form.

macintux · on Nov 30, 2017

I grew weary of seeing it wrong, which is nearly all the time on Twitter.

https://twitter.com/macintux/status/464960888441552896?s=17

romwell · on Nov 29, 2017

Since "ya" is "I" in Russian (transliterated), the only logical conclusion is that "ya'll" is an abbreviation for "Ya will", as in "Ya will rock you".