YY

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

Jack has a Big YY

by Bomomodickson November 30, 2017

YY

shorthand/abreviation for Yagami Yato

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

by zaddy42 October 12, 2020

YY

acronym for "you must be pretty proud of yourself"

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

by MarjoryStewartBaxter January 10, 2007

YY

Imitated or copied.

Chinese knock offs that steal your IP almost exactly.

You’re not legit till you get YYed.

by Workinlocal July 14, 2018

YY

YikYak; a smartphone app in which you can chat with people around you anonymously. It's popular in college areas especially in the US.

"How's your summer class going?"
"It's so boring. I'm there on YY must of the time"
"What's YY?"
"YikYak, you don't know it? Go and check it out it's worth trying"

by AxMan(>|<) July 22, 2015

YYS

YYS means yee yee school. That means. there’s a bbq every homecoming and once a year, the boys gather up and ride a tractor with a trailer hooked up on it and come to school.

i hate my YYS school.

by omw.to.your.dads.house October 13, 2019

yy

Acronym for "yeah, why?"

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

by Shvu Besheket September 18, 2018