YY 

A guy that has a big and enormous nappy that he has

Jack has a Big YY

YY by Bomomodickson November 30, 2017

yy 

Acronym for "yeah, why?"

Laura texted David if he was busy right now. David replied with a "YY?"/

yy by Shvu Besheket September 18, 2018

YY 

shorthand/abreviation for Yagami Yato

"hey have you heard the new yy audio? its everything to me"

YY by zaddy42 October 12, 2020

yy 

Short for "yeah yeah". Is a disrespectful response/way to end a debate, if you had enough from someone and are not up for further discussion at all.

Its usually not a comedic response, unlike the long version "yeah yeah" can be. Since it expresses how annoyed the responding person is, by them not even bothering to type out the full words ("yeah").

"... I told you, climate change is a chinese conspiracy!"
"yy"

yy by NIN39999999 September 20, 2017

YY 

acronym for "you must be pretty proud of yourself"

Sean: "I got an A on the test balla."
Jeremy: "YY"

YY by MarjoryStewartBaxter January 10, 2007

yy 

yes, i am very sorry

Carlo: "Yes, I will try to better myself and am indeed very sorryy."

yy by lily delacroix January 6, 2020

YY 

Imitated or copied.

Chinese knock offs that steal your IP almost exactly.

You’re not legit till you get YYed.

YY by Workinlocal July 14, 2018