Y

Y U No

Crudely drawn stick figure guy yelling "Y U NO [do something]"

Y2K

Aesthetic reviving early-2000s fashion and design — low-rise jeans, butterfly clips, chrome, and rhinestones

Yao Ming Face

Screenshot of basketball player Yao Ming laughing mid-interview, used for skeptical or mocking laughter

Yeet

Exclamation of excitement, or to throw something with force

Yikes

Expression of secondhand embarrassment or disapproval

YKTV

You know the vibes; shorthand implying shared understanding

YMMV

Your mileage may vary; results may differ for others

YOLO

You only live once

YW

You're welcome