What is Yoish!?
1.
1. Word meaning YAY!, HORAY!, or COOL!
2. A random word you say when there is nothing else to say. Often spoken loudly and extended.
1. someone: Dude! You just killed me!
someone else: I know! Yoish!
2. Someone: so what do you want to do?
someone else: I don't know.
*silence*
Someone: YOOOOOOOOOOOOOOOOOOOOOOISH!
See