Yous has babies: Yours and Yours's

It was as I exited the mall that I saw it. A double-sided blackboard detailing the specials at Esquires. Except, it didn't read 'specials', but rather... 'speciels'. Noting the prominence of foreign workers within the café, I simply donned a wry smile and carried on. Not an unkind man, I was even willing to forgive and forget, even turn my slanted smile into a cheerful one, so long as the spelling on other side of the board was no different. Yet, a deep, ugly cringe left no doubt left me unrecognisable after I turned my head. SPESHALS!

Anecdote aside, if you're going to get something wrong, then at the very least be consistent!

Deep down, we all know that the pronoun 'you' can apply to any number of people at a time. This means that 'yous' is unnecessary in every instance it gets said. But if you're going to insist on speaking poorly, then you really ought to add an 's' to every word derived from the word 'you'. For instance, after your daily jog, you might stop by your neighbours' house.

You note their car, both awesome (it can fly) and green. "That's a mint car yous of got," you say between short breaths.

"Thanks," your friendly and intelligent neighbour replies, "but we hardly use it ever since we got our teleportation device. It takes us anywhere in seconds!"
"Oh, mean. Can I see yours teleportation device?"

"Sure can. Come on in."

You step inside. It's the most amazing house you've ever seen, the descriptions irrelevant to the blog post in which you're presently featuring. "Wow, this place is real nice. Is it yours's, or are yous renting?"

Why leave 'yous' to fend for itself? Give it some friends. Since you've already turned 'you' into 'yous' in cases where two or more people are the subjects of 'you', naturally you should also do the following. 

It's consistent, it's logical, and it clearly makes your language sound aeons cooler than your everyday lingo. Look, Gollum is on the right track.

What? So, you're saying that Gollum is not your role model? But... the language and all... I just thought... Pshh, whatever.