Sos

It's used when you're embarrassed, or to express your fun even if it's very ambiguous

-hey man look at this meme, is really funny
- Sos

yak

Acronym for “you already know (it)” , is a short format text (as lol or asap) to use when someone is aware or has knowledge about something. Even used when the other person thinks what you already thought, without telling him, about a certain incident or fact. Similar to the Italian “gls” which means “già lo sai” (translated to “yak”).

“That boy is ready for war with that backpack”
“Yeah, yak”