What is Yish?
1.
1. A strange form of the word 'yes'. Often used to show indifference.
2. An exclamation of annoyance or irritation, often used like 'geez'.
1. Person1- Do you want to babysit tonight or not?
Person2- Eh...yish.
2. D- "I know a song that gets on everybody's nerves, everybody's nerves, everybody's nerves! I know a song that gets on everybody's nerves and it goes...like...this!..."
E- "Oh yish! would you SHUT UP!"
See
2.
A cheap ending to a sentence. Otherwise, transforming the word
i.e Whatchoo doin' afta school, yish?
3.
nickname/shorting for the name "yishai"
"Hey Yish, you getting head after school today?"
"Yish, stop being such a shmuck"