Gukin
1. A deranged, senile old woman who tends to visit her neighbors in her bathrobe, telling them to keep down the ruckus.

2. One whose piercing, squinty glazed-eyes haunt the dreams of those who meet her.

3. A verb meaning to "shush" or to "silence" someone.
"Dude, you just Gukined me in the library. That was fucked up."

"You can't Gukin me...it's only 7:30. PM."