A word that Milly (a nine-year old puppet from the youtube channel HeyItsMilly) taunts Rafi with. Milly often questions Rafi on subject matters such as sex, drugs, and violence. When he does not tell her because she is too young, she comes up with a word "shirsh" to show him what it feels like to have their question ignored.
What's your favorite curse word Milly?
Milly: It starts with a "sh"...can you guess it?
Rafi: DON'T SAY IT MILLY.